diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/config/FlexibleLocalDateTimeDeserializer.java b/safety-cedu-service/src/main/java/org/qinan/cedu/config/FlexibleLocalDateTimeDeserializer.java
new file mode 100644
index 00000000..4800e51d
--- /dev/null
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/config/FlexibleLocalDateTimeDeserializer.java
@@ -0,0 +1,47 @@
+package org.qinan.cedu.config;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+
+import java.io.IOException;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+/**
+ * 兼容多种格式的 LocalDateTime 反序列化器：
+ * 解决 @JsonFormat(pattern = "yyyy-MM-dd") 配在 LocalDateTime 上时，
+ * 纯日期字符串无法构造 LocalDateTime 导致的反序列化失败问题。
+ */
+public class FlexibleLocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {
+
+    private static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+
+    /**
+     * 将 JSON 字符串反序列化为 LocalDateTime
+     * 支持格式：yyyy-MM-dd（补 00:00:00）、yyyy-MM-dd HH:mm:ss、ISO 格式（yyyy-MM-ddTHH:mm:ss）
+     *
+     * @param p    JSON 解析器
+     * @param ctxt 反序列化上下文
+     * @return 解析后的 LocalDateTime，空字符串返回 null
+     * @throws IOException 读取失败或格式非法时抛出
+     */
+    @Override
+    public LocalDateTime deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
+        String text = p.getText();
+        if (text == null || text.trim().isEmpty()) {
+            return null;
+        }
+        text = text.trim();
+        if (text.length() == 10) {
+            // 纯日期字符串，时间部分补 00:00:00
+            return LocalDate.parse(text).atStartOfDay();
+        }
+        if (text.contains("T")) {
+            // ISO 格式
+            return LocalDateTime.parse(text);
+        }
+        return LocalDateTime.parse(text, DATE_TIME_FORMATTER);
+    }
+}
diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/ClassManagementDTO.java b/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/ClassManagementDTO.java
index 7d84551d..02009e6d 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/ClassManagementDTO.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/model/dto/ClassManagementDTO.java
@@ -1,8 +1,11 @@
 package org.qinan.cedu.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
+import org.qinan.cedu.config.FlexibleLocalDateTimeDeserializer;
 import org.springframework.format.annotation.DateTimeFormat;
 
 import java.time.LocalDateTime;
@@ -42,13 +45,11 @@ public class ClassManagementDTO {
     private String safetyManager;
 
     @ApiModelProperty("培训开始日期")
-    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
-    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonDeserialize(using = FlexibleLocalDateTimeDeserializer.class)
     private LocalDateTime startDate;
 
     @ApiModelProperty("培训结束日期")
-    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
-    @DateTimeFormat(pattern = "yyyy-MM-dd")
+    @JsonDeserialize(using = FlexibleLocalDateTimeDeserializer.class)
     private LocalDateTime endDate;
 
     @ApiModelProperty("是否开启考试（0-否，1-是）")