diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java
index c977f4d..ddaf209 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/jarvis/TencentDocController.java
@@ -513,7 +513,10 @@ public class TencentDocController extends BaseController {
             
             // 4. 获取分布式锁（针对该订单单号+文档+工作表）
             lockKey = TENCENT_DOC_LOCK_KEY + fileId + ":" + sheetId + ":" + thirdPartyOrderNo;
-            boolean lockAcquired = redisCache.setCacheObject(lockKey, "locked", 30, TimeUnit.SECONDS);
+            
+            // 检查锁是否已存在
+            String existingLock = redisCache.getCacheObject(lockKey);
+            boolean lockAcquired = (existingLock == null);
             
             if (!lockAcquired) {
                 log.warn("获取锁失败，该订单正在被其他请求处理：{}", thirdPartyOrderNo);
@@ -522,6 +525,8 @@ public class TencentDocController extends BaseController {
                 return AjaxResult.error("该订单正在处理中，请稍后再试");
             }
             
+            // 设置锁
+            redisCache.setCacheObject(lockKey, "locked", 30, TimeUnit.SECONDS);
             log.info("✓ 获取分布式锁成功 - 单号: {}, lockKey: {}", thirdPartyOrderNo, lockKey);
             
             // 5. 读取表头（从配置的 headerRow 读取，与 startRow 独立）