diff --git a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/convertor/EvalSignTaskCmdConvertor.java b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/convertor/EvalSignTaskCmdConvertor.java
new file mode 100644
index 0000000..a03108c
--- /dev/null
+++ b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/convertor/EvalSignTaskCmdConvertor.java
@@ -0,0 +1,54 @@
+package org.qinan.safetyeval.app.convertor;
+
+import org.mapstruct.AfterMapping;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.MappingTarget;
+import org.qinan.safetyeval.client.co.institution.EvalSignTaskCO;
+import org.qinan.safetyeval.client.dto.institution.EvalSignTaskPageQuery;
+import org.qinan.safetyeval.client.dto.institution.EvalSignTaskSaveCmd;
+import org.qinan.safetyeval.domain.constant.SignTaskStatusEnum;
+import org.qinan.safetyeval.domain.entity.EvalSignTaskEntity;
+import org.qinan.safetyeval.domain.query.EvalSignTaskQuery;
+
+import java.util.List;
+
+@Mapper(componentModel = "spring")
+public interface EvalSignTaskCmdConvertor {
+
+    @Mapping(target = "id", ignore = true)
+    @Mapping(target = "orgId", ignore = true)
+    @Mapping(target = "tenantId", ignore = true)
+    @Mapping(target = "projectId", expression = "java(cmd.getProjectId() == null ? null : Long.parseLong(cmd.getProjectId()))")
+    @Mapping(target = "bizRefId", expression = "java(cmd.getBizRefId() == null || cmd.getBizRefId().isEmpty() ? null : Long.parseLong(cmd.getBizRefId()))")
+    @Mapping(target = "signerPersonnelId", expression = "java(cmd.getSignerPersonnelId() == null || cmd.getSignerPersonnelId().isEmpty() ? null : Long.parseLong(cmd.getSignerPersonnelId()))")
+    EvalSignTaskEntity convertSaveCmdToE(EvalSignTaskSaveCmd cmd);
+
+    @Mapping(target = "pageNum", source = "current")
+    @Mapping(target = "pageSize", source = "size")
+    @Mapping(target = "orgId", ignore = true)
+    @Mapping(target = "projectId", expression = "java(query.getProjectId() == null || query.getProjectId().isEmpty() ? null : Long.parseLong(query.getProjectId()))")
+    @Mapping(target = "signerPersonnelId", expression = "java(query.getSignerPersonnelId() == null || query.getSignerPersonnelId().isEmpty() ? null : Long.parseLong(query.getSignerPersonnelId()))")
+    EvalSignTaskQuery convertPageQueryToQ(EvalSignTaskPageQuery query);
+
+    @Mapping(target = "id", expression = "java(entity.getId() == null ? null : String.valueOf(entity.getId()))")
+    @Mapping(target = "orgId", expression = "java(entity.getOrgId() == null ? null : String.valueOf(entity.getOrgId()))")
+    @Mapping(target = "projectId", expression = "java(entity.getProjectId() == null ? null : String.valueOf(entity.getProjectId()))")
+    @Mapping(target = "bizRefId", expression = "java(entity.getBizRefId() == null ? null : String.valueOf(entity.getBizRefId()))")
+    @Mapping(target = "signerPersonnelId", expression = "java(entity.getSignerPersonnelId() == null ? null : String.valueOf(entity.getSignerPersonnelId()))")
+    @Mapping(target = "taskStatusName", ignore = true)
+    EvalSignTaskCO convertEToCO(EvalSignTaskEntity entity);
+
+    List<EvalSignTaskCO> convertEListToCOList(List<EvalSignTaskEntity> list);
+
+    @AfterMapping
+    default void fillEnumNames(EvalSignTaskEntity entity, @MappingTarget EvalSignTaskCO co) {
+        if (entity == null || co == null) {
+            return;
+        }
+        SignTaskStatusEnum status = SignTaskStatusEnum.ofCode(entity.getTaskStatusCode());
+        if (status != null) {
+            co.setTaskStatusName(status.getValue());
+        }
+    }
+}
diff --git a/safety-eval-client/src/main/java/org/qinan/safetyeval/client/co/institution/EvalSignTaskEnumsCO.java b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/co/institution/EvalSignTaskEnumsCO.java
new file mode 100644
index 0000000..f30e7c7
--- /dev/null
+++ b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/co/institution/EvalSignTaskEnumsCO.java
@@ -0,0 +1,13 @@
+package org.qinan.safetyeval.client.co.institution;
+
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class EvalSignTaskEnumsCO {
+
+    @ApiModelProperty("任务状态")
+    private List<EnumOptionCO> taskStatus;
+}
diff --git a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/constant/SignTaskStatusEnum.java b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/constant/SignTaskStatusEnum.java
new file mode 100644
index 0000000..4179c57
--- /dev/null
+++ b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/constant/SignTaskStatusEnum.java
@@ -0,0 +1,40 @@
+package org.qinan.safetyeval.domain.constant;
+
+/**
+ * 签字任务状态：1待签 2已签 3已作废
+ */
+public enum SignTaskStatusEnum {
+
+    PENDING(1, "待签"),
+    SIGNED(2, "已签"),
+    CANCELLED(3, "已作废"),
+    ;
+
+    private final int code;
+    private final String value;
+
+    SignTaskStatusEnum(int code, String value) {
+        this.code = code;
+        this.value = value;
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public static SignTaskStatusEnum ofCode(Integer code) {
+        if (code == null) {
+            return null;
+        }
+        for (SignTaskStatusEnum item : values()) {
+            if (item.code == code) {
+                return item;
+            }
+        }
+        return null;
+    }
+}
diff --git a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalSignTaskDomainService.java b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalSignTaskDomainService.java
new file mode 100644
index 0000000..e50f80c
--- /dev/null
+++ b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalSignTaskDomainService.java
@@ -0,0 +1,38 @@
+package org.qinan.safetyeval.domain.service;
+
+import org.qinan.safetyeval.domain.constant.SignTaskStatusEnum;
+import org.qinan.safetyeval.domain.entity.EvalSignTaskEntity;
+import org.qinan.safetyeval.domain.exception.BizException;
+import org.qinan.safetyeval.domain.exception.ErrorCode;
+import org.qinan.safetyeval.domain.gateway.EvalSignTaskGateway;
+import org.qinan.safetyeval.domain.query.EvalSignTaskQuery;
+import org.qinan.safetyeval.domain.query.PageResult;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+
+@Service
+public class EvalSignTaskDomainService {
+
+    @Resource
+    private EvalSignTaskGateway evalSignTaskGateway;
+
+    public EvalSignTaskEntity add(EvalSignTaskEntity entity) {
+        if (entity.getTaskStatusCode() == null) {
+            entity.setTaskStatusCode(SignTaskStatusEnum.PENDING.getCode());
+        }
+        return evalSignTaskGateway.save(entity);
+    }
+
+    public EvalSignTaskEntity get(Long id) {
+        EvalSignTaskEntity existing = evalSignTaskGateway.get(id);
+        if (existing == null) {
+            throw new BizException(ErrorCode.EVAL_SIGN_TASK_NOT_FOUND);
+        }
+        return existing;
+    }
+
+    public PageResult<EvalSignTaskEntity> page(EvalSignTaskQuery query) {
+        return evalSignTaskGateway.page(query);
+    }
+}
diff --git a/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/convertor/EvalSignTaskDoConvertor.java b/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/convertor/EvalSignTaskDoConvertor.java
new file mode 100644
index 0000000..d37814d
--- /dev/null
+++ b/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/convertor/EvalSignTaskDoConvertor.java
@@ -0,0 +1,13 @@
+package org.qinan.safetyeval.infrastructure.convertor;
+
+import org.mapstruct.Mapper;
+import org.qinan.safetyeval.domain.entity.EvalSignTaskEntity;
+import org.qinan.safetyeval.infrastructure.dataobject.EvalSignTaskDO;
+
+@Mapper(componentModel = "spring")
+public interface EvalSignTaskDoConvertor {
+
+    EvalSignTaskDO convertEToDo(EvalSignTaskEntity entity);
+
+    EvalSignTaskEntity convertDoToE(EvalSignTaskDO dataObject);
+}