diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseManagementConvertor.java b/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseManagementConvertor.java
index 7aa189db..45abc8e0 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseManagementConvertor.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseManagementConvertor.java
@@ -3,18 +3,18 @@ package org.qinan.cedu.convertor;
 import org.mapstruct.Mapper;
 import org.qinan.cedu.model.dto.CourseManagementDTO;
 import org.qinan.cedu.model.dto.CourseManagementVO;
-import org.qinan.cedu.model.entity.CourseManagement;
+import org.qinan.cedu.model.entity.CourseManagementDO;
 
 import java.util.List;
 
 @Mapper(componentModel = "spring")
 public interface CourseManagementConvertor {
 
-    CourseManagement convertDtoToE(CourseManagementDTO dto);
+    CourseManagementDO convertDtoToE(CourseManagementDTO dto);
 
-    CourseManagementVO convertEToVo(CourseManagement entity);
+    CourseManagementVO convertEToVo(CourseManagementDO entity);
 
-    List<CourseManagement> convertDtoListToEList(List<CourseManagementDTO> list);
+    List<CourseManagementDO> convertDtoListToEList(List<CourseManagementDTO> list);
 
-    List<CourseManagementVO> convertEListToVoList(List<CourseManagement> list);
+    List<CourseManagementVO> convertEListToVoList(List<CourseManagementDO> list);
 }
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseRelCoursewareConvertor.java b/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseRelCoursewareConvertor.java
index 29c2512b..a55e3c07 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseRelCoursewareConvertor.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CourseRelCoursewareConvertor.java
@@ -3,18 +3,18 @@ package org.qinan.cedu.convertor;
 import org.mapstruct.Mapper;
 import org.qinan.cedu.model.dto.CourseRelCoursewareDTO;
 import org.qinan.cedu.model.dto.CourseRelCoursewareVO;
-import org.qinan.cedu.model.entity.CourseRelCourseware;
+import org.qinan.cedu.model.entity.CourseRelCoursewareDO;
 
 import java.util.List;
 
 @Mapper(componentModel = "spring")
 public interface CourseRelCoursewareConvertor {
 
-    CourseRelCourseware convertDtoToE(CourseRelCoursewareDTO dto);
+    CourseRelCoursewareDO convertDtoToE(CourseRelCoursewareDTO dto);
 
-    CourseRelCoursewareVO convertEToVo(CourseRelCourseware entity);
+    CourseRelCoursewareVO convertEToVo(CourseRelCoursewareDO entity);
 
-    List<CourseRelCourseware> convertDtoListToEList(List<CourseRelCoursewareDTO> list);
+    List<CourseRelCoursewareDO> convertDtoListToEList(List<CourseRelCoursewareDTO> list);
 
-    List<CourseRelCoursewareVO> convertEListToVoList(List<CourseRelCourseware> list);
+    List<CourseRelCoursewareVO> convertEListToVoList(List<CourseRelCoursewareDO> list);
 }
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CoursewareManagementConvertor.java b/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CoursewareManagementConvertor.java
index 167e8ceb..83258806 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CoursewareManagementConvertor.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/convertor/CoursewareManagementConvertor.java
@@ -3,18 +3,18 @@ package org.qinan.cedu.convertor;
 import org.mapstruct.Mapper;
 import org.qinan.cedu.model.dto.CoursewareManagementDTO;
 import org.qinan.cedu.model.dto.CoursewareManagementVO;
-import org.qinan.cedu.model.entity.CoursewareManagement;
+import org.qinan.cedu.model.entity.CoursewareManagementDO;
 
 import java.util.List;
 
 @Mapper(componentModel = "spring")
 public interface CoursewareManagementConvertor {
 
-    CoursewareManagement convertDtoToE(CoursewareManagementDTO dto);
+    CoursewareManagementDO convertDtoToE(CoursewareManagementDTO dto);
 
-    CoursewareManagementVO convertEToVo(CoursewareManagement entity);
+    CoursewareManagementVO convertEToVo(CoursewareManagementDO entity);
 
-    List<CoursewareManagement> convertDtoListToEList(List<CoursewareManagementDTO> list);
+    List<CoursewareManagementDO> convertDtoListToEList(List<CoursewareManagementDTO> list);
 
-    List<CoursewareManagementVO> convertEListToVoList(List<CoursewareManagement> list);
+    List<CoursewareManagementVO> convertEListToVoList(List<CoursewareManagementDO> list);
 }
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseManagementMapper.java b/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseManagementMapper.java
index e180a61f..917b051f 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseManagementMapper.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseManagementMapper.java
@@ -1,7 +1,7 @@
 package org.qinan.cedu.mapper;
 
 import org.apache.ibatis.annotations.Mapper;
-import org.qinan.cedu.model.entity.CourseManagement;
+import org.qinan.cedu.model.entity.CourseManagementDO;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 
 /**
@@ -11,7 +11,7 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 * @Entity org.qinan.cedu.model.entity.CourseManagement
 */
 @Mapper
-public interface CourseManagementMapper extends BaseMapper<CourseManagement> {
+public interface CourseManagementMapper extends BaseMapper<CourseManagementDO> {
 
 }
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseRelCoursewareMapper.java b/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseRelCoursewareMapper.java
index d4855b5b..96ad7400 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseRelCoursewareMapper.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CourseRelCoursewareMapper.java
@@ -1,7 +1,7 @@
 package org.qinan.cedu.mapper;
 
 import org.apache.ibatis.annotations.Mapper;
-import org.qinan.cedu.model.entity.CourseRelCourseware;
+import org.qinan.cedu.model.entity.CourseRelCoursewareDO;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 
 /**
@@ -11,7 +11,7 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 * @Entity org.qinan.cedu.model.entity.CourseRelCourseware
 */
 @Mapper
-public interface CourseRelCoursewareMapper extends BaseMapper<CourseRelCourseware> {
+public interface CourseRelCoursewareMapper extends BaseMapper<CourseRelCoursewareDO> {
 
 }
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CoursewareManagementMapper.java b/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CoursewareManagementMapper.java
index e46ce7c8..d1e4d941 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CoursewareManagementMapper.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/mapper/CoursewareManagementMapper.java
@@ -1,7 +1,7 @@
 package org.qinan.cedu.mapper;
 
 import org.apache.ibatis.annotations.Mapper;
-import org.qinan.cedu.model.entity.CoursewareManagement;
+import org.qinan.cedu.model.entity.CoursewareManagementDO;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 
 /**
@@ -11,7 +11,7 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 * @Entity org.qinan.cedu.model.entity.CoursewareManagement
 */
 @Mapper
-public interface CoursewareManagementMapper extends BaseMapper<CoursewareManagement> {
+public interface CoursewareManagementMapper extends BaseMapper<CoursewareManagementDO> {
 
 }
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseManagement.java b/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseManagementDO.java
similarity index 96%
rename from safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseManagement.java
rename to safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseManagementDO.java
index a5bf8b9c..fcf20410 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseManagement.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseManagementDO.java
@@ -16,7 +16,7 @@ import java.math.BigDecimal;
 @EqualsAndHashCode(callSuper = true)
 @TableName(value ="course_management")
 @Data
-public class CourseManagement extends BaseEntity {
+public class CourseManagementDO extends BaseEntity {
     /**
      * 主键
      */
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseRelCourseware.java b/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseRelCoursewareDO.java
similarity index 96%
rename from safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseRelCourseware.java
rename to safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseRelCoursewareDO.java
index 8c5d689f..17de5154 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseRelCourseware.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CourseRelCoursewareDO.java
@@ -11,7 +11,7 @@ import lombok.Data;
  */
 @TableName(value ="course_rel_courseware")
 @Data
-public class CourseRelCourseware {
+public class CourseRelCoursewareDO {
     /**
      * 主键
      */
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CoursewareManagement.java b/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CoursewareManagementDO.java
similarity index 96%
rename from safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CoursewareManagement.java
rename to safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CoursewareManagementDO.java
index 7ab180b7..08b27f05 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CoursewareManagement.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/model/entity/CoursewareManagementDO.java
@@ -13,7 +13,7 @@ import java.math.BigDecimal;
  */
 @TableName(value ="courseware_management")
 @Data
-public class CoursewareManagement extends BaseEntity {
+public class CoursewareManagementDO extends BaseEntity {
     /**
      * 主键
      */
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseManagementService.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseManagementService.java
index e008150c..2a0ddd3d 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseManagementService.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseManagementService.java
@@ -5,12 +5,12 @@ import com.baomidou.mybatisplus.extension.service.IService;
 import org.qinan.cedu.model.dto.CourseManagementDTO;
 import org.qinan.cedu.model.dto.CourseManagementPageQuery;
 import org.qinan.cedu.model.dto.CourseManagementVO;
-import org.qinan.cedu.model.entity.CourseManagement;
+import org.qinan.cedu.model.entity.CourseManagementDO;
 
 /**
  * 课程管理服务
  */
-public interface CourseManagementService extends IService<CourseManagement> {
+public interface CourseManagementService extends IService<CourseManagementDO> {
 
     IPage<CourseManagementVO> pageQuery(CourseManagementPageQuery query);
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseRelCoursewareService.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseRelCoursewareService.java
index 3452f5c9..3c12d407 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseRelCoursewareService.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/CourseRelCoursewareService.java
@@ -4,14 +4,14 @@ import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.service.IService;
 import org.qinan.cedu.model.dto.CourseRelCoursewareDTO;
 import org.qinan.cedu.model.dto.CourseRelCoursewareVO;
-import org.qinan.cedu.model.entity.CourseRelCourseware;
+import org.qinan.cedu.model.entity.CourseRelCoursewareDO;
 
 import java.util.List;
 
 /**
  * 课程关联课件服务
  */
-public interface CourseRelCoursewareService extends IService<CourseRelCourseware> {
+public interface CourseRelCoursewareService extends IService<CourseRelCoursewareDO> {
 
     IPage<CourseRelCoursewareVO> pageQuery(long current, long size, Long courseId);
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/CoursewareManagementService.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/CoursewareManagementService.java
index 02a72f86..f05f04be 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/CoursewareManagementService.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/CoursewareManagementService.java
@@ -5,12 +5,12 @@ import com.baomidou.mybatisplus.extension.service.IService;
 import org.qinan.cedu.model.dto.CoursewareManagementDTO;
 import org.qinan.cedu.model.dto.CoursewareManagementPageQuery;
 import org.qinan.cedu.model.dto.CoursewareManagementVO;
-import org.qinan.cedu.model.entity.CoursewareManagement;
+import org.qinan.cedu.model.entity.CoursewareManagementDO;
 
 /**
  * 课件管理服务
  */
-public interface CoursewareManagementService extends IService<CoursewareManagement> {
+public interface CoursewareManagementService extends IService<CoursewareManagementDO> {
 
     IPage<CoursewareManagementVO> pageQuery(CoursewareManagementPageQuery query);
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseManagementServiceImpl.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseManagementServiceImpl.java
index 65a5b144..84f4a346 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseManagementServiceImpl.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseManagementServiceImpl.java
@@ -7,7 +7,7 @@ import org.qinan.cedu.convertor.CourseManagementConvertor;
 import org.qinan.cedu.model.dto.CourseManagementDTO;
 import org.qinan.cedu.model.dto.CourseManagementPageQuery;
 import org.qinan.cedu.model.dto.CourseManagementVO;
-import org.qinan.cedu.model.entity.CourseManagement;
+import org.qinan.cedu.model.entity.CourseManagementDO;
 import org.qinan.cedu.enums.DeleteEnum;
 import org.qinan.cedu.mapper.CourseManagementMapper;
 import org.qinan.cedu.service.CourseManagementService;
@@ -21,7 +21,7 @@ import java.time.LocalDateTime;
  * 课程管理服务实现
  */
 @Service
-public class CourseManagementServiceImpl extends ServiceImpl<CourseManagementMapper, CourseManagement>
+public class CourseManagementServiceImpl extends ServiceImpl<CourseManagementMapper, CourseManagementDO>
         implements CourseManagementService {
 
     @Autowired
@@ -31,27 +31,27 @@ public class CourseManagementServiceImpl extends ServiceImpl<CourseManagementMap
     public IPage<CourseManagementVO> pageQuery(CourseManagementPageQuery query) {
         long current = query.getCurrent() == null ? 1L : query.getCurrent();
         long size = query.getSize() == null ? 10L : query.getSize();
-        IPage<CourseManagement> page = this.lambdaQuery()
-                .eq(CourseManagement::getDeleteEnum, DeleteEnum.FALSE.getCode())
-                .like(StringUtils.hasText(query.getCourseName()), CourseManagement::getCourseName, query.getCourseName())
-                .eq(query.getStatus() != null, CourseManagement::getStatus, query.getStatus())
-                .orderByDesc(CourseManagement::getCreateTime)
+        IPage<CourseManagementDO> page = this.lambdaQuery()
+                .eq(CourseManagementDO::getDeleteEnum, DeleteEnum.FALSE.getCode())
+                .like(StringUtils.hasText(query.getCourseName()), CourseManagementDO::getCourseName, query.getCourseName())
+                .eq(query.getStatus() != null, CourseManagementDO::getStatus, query.getStatus())
+                .orderByDesc(CourseManagementDO::getCreateTime)
                 .page(new Page<>(current, size));
         return page.convert(courseManagementConvertor::convertEToVo);
     }
 
     @Override
     public CourseManagementVO getDetail(Long id) {
-        CourseManagement entity = this.lambdaQuery()
-                .eq(CourseManagement::getId, id)
-                .eq(CourseManagement::getDeleteEnum, DeleteEnum.FALSE.getCode())
+        CourseManagementDO entity = this.lambdaQuery()
+                .eq(CourseManagementDO::getId, id)
+                .eq(CourseManagementDO::getDeleteEnum, DeleteEnum.FALSE.getCode())
                 .one();
         return courseManagementConvertor.convertEToVo(entity);
     }
 
     @Override
     public boolean saveCourse(CourseManagementDTO dto) {
-        CourseManagement entity = courseManagementConvertor.convertDtoToE(dto);
+        CourseManagementDO entity = courseManagementConvertor.convertDtoToE(dto);
         LocalDateTime now = LocalDateTime.now();
         entity.setCreateTime(now);
         entity.setUpdateTime(now);
@@ -64,7 +64,7 @@ public class CourseManagementServiceImpl extends ServiceImpl<CourseManagementMap
 
     @Override
     public boolean updateCourse(CourseManagementDTO dto) {
-        CourseManagement entity = courseManagementConvertor.convertDtoToE(dto);
+        CourseManagementDO entity = courseManagementConvertor.convertDtoToE(dto);
         entity.setUpdateTime(LocalDateTime.now());
         return this.updateById(entity);
     }
@@ -72,10 +72,10 @@ public class CourseManagementServiceImpl extends ServiceImpl<CourseManagementMap
     @Override
     public boolean deleteById(Long id) {
         return this.lambdaUpdate()
-                .set(CourseManagement::getDeleteEnum, DeleteEnum.TRUE.getCode())
-                .set(CourseManagement::getUpdateTime, LocalDateTime.now())
-                .eq(CourseManagement::getId, id)
-                .eq(CourseManagement::getDeleteEnum, DeleteEnum.FALSE.getCode())
+                .set(CourseManagementDO::getDeleteEnum, DeleteEnum.TRUE.getCode())
+                .set(CourseManagementDO::getUpdateTime, LocalDateTime.now())
+                .eq(CourseManagementDO::getId, id)
+                .eq(CourseManagementDO::getDeleteEnum, DeleteEnum.FALSE.getCode())
                 .update();
     }
 }
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseRelCoursewareServiceImpl.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseRelCoursewareServiceImpl.java
index 647ce73d..3ea91ef3 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseRelCoursewareServiceImpl.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CourseRelCoursewareServiceImpl.java
@@ -6,7 +6,7 @@ import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.qinan.cedu.convertor.CourseRelCoursewareConvertor;
 import org.qinan.cedu.model.dto.CourseRelCoursewareDTO;
 import org.qinan.cedu.model.dto.CourseRelCoursewareVO;
-import org.qinan.cedu.model.entity.CourseRelCourseware;
+import org.qinan.cedu.model.entity.CourseRelCoursewareDO;
 import org.qinan.cedu.mapper.CourseRelCoursewareMapper;
 import org.qinan.cedu.service.CourseRelCoursewareService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -18,7 +18,7 @@ import java.util.List;
  * 课程关联课件服务实现
  */
 @Service
-public class CourseRelCoursewareServiceImpl extends ServiceImpl<CourseRelCoursewareMapper, CourseRelCourseware>
+public class CourseRelCoursewareServiceImpl extends ServiceImpl<CourseRelCoursewareMapper, CourseRelCoursewareDO>
         implements CourseRelCoursewareService {
 
     @Autowired
@@ -26,9 +26,9 @@ public class CourseRelCoursewareServiceImpl extends ServiceImpl<CourseRelCoursew
 
     @Override
     public IPage<CourseRelCoursewareVO> pageQuery(long current, long size, Long courseId) {
-        IPage<CourseRelCourseware> page = this.lambdaQuery()
-                .eq(courseId != null, CourseRelCourseware::getCourseId, courseId)
-                .orderByAsc(CourseRelCourseware::getSort)
+        IPage<CourseRelCoursewareDO> page = this.lambdaQuery()
+                .eq(courseId != null, CourseRelCoursewareDO::getCourseId, courseId)
+                .orderByAsc(CourseRelCoursewareDO::getSort)
                 .page(new Page<>(current, size));
         return page.convert(courseRelCoursewareConvertor::convertEToVo);
     }
@@ -40,22 +40,22 @@ public class CourseRelCoursewareServiceImpl extends ServiceImpl<CourseRelCoursew
 
     @Override
     public List<CourseRelCoursewareVO> listByCourseId(Long courseId) {
-        List<CourseRelCourseware> list = this.lambdaQuery()
-                .eq(CourseRelCourseware::getCourseId, courseId)
-                .orderByAsc(CourseRelCourseware::getSort)
+        List<CourseRelCoursewareDO> list = this.lambdaQuery()
+                .eq(CourseRelCoursewareDO::getCourseId, courseId)
+                .orderByAsc(CourseRelCoursewareDO::getSort)
                 .list();
         return courseRelCoursewareConvertor.convertEListToVoList(list);
     }
 
     @Override
     public boolean saveRel(CourseRelCoursewareDTO dto) {
-        CourseRelCourseware entity = courseRelCoursewareConvertor.convertDtoToE(dto);
+        CourseRelCoursewareDO entity = courseRelCoursewareConvertor.convertDtoToE(dto);
         return this.save(entity);
     }
 
     @Override
     public boolean updateRel(CourseRelCoursewareDTO dto) {
-        CourseRelCourseware entity = courseRelCoursewareConvertor.convertDtoToE(dto);
+        CourseRelCoursewareDO entity = courseRelCoursewareConvertor.convertDtoToE(dto);
         return this.updateById(entity);
     }
 
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CoursewareManagementServiceImpl.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CoursewareManagementServiceImpl.java
index b50a37a2..6d8430be 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CoursewareManagementServiceImpl.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/CoursewareManagementServiceImpl.java
@@ -7,7 +7,7 @@ import org.qinan.cedu.convertor.CoursewareManagementConvertor;
 import org.qinan.cedu.model.dto.CoursewareManagementDTO;
 import org.qinan.cedu.model.dto.CoursewareManagementPageQuery;
 import org.qinan.cedu.model.dto.CoursewareManagementVO;
-import org.qinan.cedu.model.entity.CoursewareManagement;
+import org.qinan.cedu.model.entity.CoursewareManagementDO;
 import org.qinan.cedu.enums.DeleteEnum;
 import org.qinan.cedu.mapper.CoursewareManagementMapper;
 import org.qinan.cedu.service.CoursewareManagementService;
@@ -21,7 +21,7 @@ import java.time.LocalDateTime;
  * 课件管理服务实现
  */
 @Service
-public class CoursewareManagementServiceImpl extends ServiceImpl<CoursewareManagementMapper, CoursewareManagement>
+public class CoursewareManagementServiceImpl extends ServiceImpl<CoursewareManagementMapper, CoursewareManagementDO>
         implements CoursewareManagementService {
 
     @Autowired
@@ -31,27 +31,27 @@ public class CoursewareManagementServiceImpl extends ServiceImpl<CoursewareManag
     public IPage<CoursewareManagementVO> pageQuery(CoursewareManagementPageQuery query) {
         long current = query.getCurrent() == null ? 1L : query.getCurrent();
         long size = query.getSize() == null ? 10L : query.getSize();
-        IPage<CoursewareManagement> page = this.lambdaQuery()
-                .eq(CoursewareManagement::getDeleteEnum, DeleteEnum.FALSE.getCode())
-                .like(StringUtils.hasText(query.getCoursewareName()), CoursewareManagement::getCoursewareName, query.getCoursewareName())
-                .eq(query.getStatus() != null, CoursewareManagement::getStatus, query.getStatus())
-                .orderByDesc(CoursewareManagement::getCreateTime)
+        IPage<CoursewareManagementDO> page = this.lambdaQuery()
+                .eq(CoursewareManagementDO::getDeleteEnum, DeleteEnum.FALSE.getCode())
+                .like(StringUtils.hasText(query.getCoursewareName()), CoursewareManagementDO::getCoursewareName, query.getCoursewareName())
+                .eq(query.getStatus() != null, CoursewareManagementDO::getStatus, query.getStatus())
+                .orderByDesc(CoursewareManagementDO::getCreateTime)
                 .page(new Page<>(current, size));
         return page.convert(coursewareManagementConvertor::convertEToVo);
     }
 
     @Override
     public CoursewareManagementVO getDetail(Long id) {
-        CoursewareManagement entity = this.lambdaQuery()
-                .eq(CoursewareManagement::getId, id)
-                .eq(CoursewareManagement::getDeleteEnum, DeleteEnum.FALSE.getCode())
+        CoursewareManagementDO entity = this.lambdaQuery()
+                .eq(CoursewareManagementDO::getId, id)
+                .eq(CoursewareManagementDO::getDeleteEnum, DeleteEnum.FALSE.getCode())
                 .one();
         return coursewareManagementConvertor.convertEToVo(entity);
     }
 
     @Override
     public boolean saveCourseware(CoursewareManagementDTO dto) {
-        CoursewareManagement entity = coursewareManagementConvertor.convertDtoToE(dto);
+        CoursewareManagementDO entity = coursewareManagementConvertor.convertDtoToE(dto);
         LocalDateTime now = LocalDateTime.now();
         entity.setCreateTime(now);
         entity.setUpdateTime(now);
@@ -61,7 +61,7 @@ public class CoursewareManagementServiceImpl extends ServiceImpl<CoursewareManag
 
     @Override
     public boolean updateCourseware(CoursewareManagementDTO dto) {
-        CoursewareManagement entity = coursewareManagementConvertor.convertDtoToE(dto);
+        CoursewareManagementDO entity = coursewareManagementConvertor.convertDtoToE(dto);
         entity.setUpdateTime(LocalDateTime.now());
         return this.updateById(entity);
     }
@@ -69,10 +69,10 @@ public class CoursewareManagementServiceImpl extends ServiceImpl<CoursewareManag
     @Override
     public boolean deleteById(Long id) {
         return this.lambdaUpdate()
-                .set(CoursewareManagement::getDeleteEnum, DeleteEnum.TRUE.getCode())
-                .set(CoursewareManagement::getUpdateTime, LocalDateTime.now())
-                .eq(CoursewareManagement::getId, id)
-                .eq(CoursewareManagement::getDeleteEnum, DeleteEnum.FALSE.getCode())
+                .set(CoursewareManagementDO::getDeleteEnum, DeleteEnum.TRUE.getCode())
+                .set(CoursewareManagementDO::getUpdateTime, LocalDateTime.now())
+                .eq(CoursewareManagementDO::getId, id)
+                .eq(CoursewareManagementDO::getDeleteEnum, DeleteEnum.FALSE.getCode())
                 .update();
     }
 }