diff --git a/backend/src/main/java/com/yfd/platform/data/service/impl/FishDraftDataServiceImpl.java b/backend/src/main/java/com/yfd/platform/data/service/impl/FishDraftDataServiceImpl.java
index c1d83a4..8be4845 100644
--- a/backend/src/main/java/com/yfd/platform/data/service/impl/FishDraftDataServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/data/service/impl/FishDraftDataServiceImpl.java
@@ -198,6 +198,7 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
     public boolean saveDraft(FishDraftData fishDraftData) {
         fishDraftData.setStatus("DRAFT");
         fishDraftData.setDeletedFlag(0);
+        fishDraftData.setEnddt(fishDraftData.getStrdt());
         fishDraftData.setLockFlag(0);
         return this.save(fishDraftData);
     }
@@ -209,6 +210,7 @@ public class FishDraftDataServiceImpl extends ServiceImpl<FishDraftDataMapper, F
         if (existing == null || existing.getLockFlag() == 1) {
             return false;
         }
+        fishDraftData.setEnddt(fishDraftData.getStrdt());
         boolean isSubmitted = existing.getApprovalId() != null && StrUtil.isNotBlank(existing.getApprovalId());
         try {
             String beforeJson = objectMapper.writeValueAsString(existing);
diff --git a/backend/src/main/resources/application-prod.yml b/backend/src/main/resources/application-prod.yml
index f1d1cc7..9c33cd0 100644
--- a/backend/src/main/resources/application-prod.yml
+++ b/backend/src/main/resources/application-prod.yml
@@ -1,6 +1,8 @@
 server:
   port: 8093
-
+  tomcat:
+    max-http-form-post-size: 500MB   # Tomcat 表单体大小限制
+    connection-timeout: 120000       # 连接超时（毫秒），大文件上传需要更长
 spring:
   #应用名称
   application:
@@ -111,7 +113,10 @@ spring:
     multipart:
       max-file-size: 300MB
       max-request-size: 500MB
-
+      # 关键：文件超过 1KB 就写入磁盘临时文件，避免内存积压
+      file-size-threshold: 1KB
+      # 指定临时目录（确保 Docker 容器内该目录可写且有空间）
+      location: /qgc-platform/tmp/zip_import_temp
 logging:
   file:
     name: logs/platform-dev.log