diff --git a/src/main/java/com/ycwl/basic/service/task/impl/TaskTaskServiceImpl.java b/src/main/java/com/ycwl/basic/service/task/impl/TaskTaskServiceImpl.java
index c2183611..7a0632a3 100644
--- a/src/main/java/com/ycwl/basic/service/task/impl/TaskTaskServiceImpl.java
+++ b/src/main/java/com/ycwl/basic/service/task/impl/TaskTaskServiceImpl.java
@@ -146,6 +146,34 @@ public class TaskTaskServiceImpl implements TaskService {
         return worker;
     }
 
+    /**
+     * 比较两个版本号
+     * @param v1 版本号1
+     * @param v2 版本号2
+     * @return 负数表示 v1 < v2，0 表示相等，正数表示 v1 > v2
+     */
+    private int compareVersion(String v1, String v2) {
+        String[] parts1 = v1.split("\\.");
+        String[] parts2 = v2.split("\\.");
+        int maxLen = Math.max(parts1.length, parts2.length);
+        for (int i = 0; i < maxLen; i++) {
+            int num1 = i < parts1.length ? parseVersionPart(parts1[i]) : 0;
+            int num2 = i < parts2.length ? parseVersionPart(parts2[i]) : 0;
+            if (num1 != num2) {
+                return num1 - num2;
+            }
+        }
+        return 0;
+    }
+
+    private int parseVersionPart(String part) {
+        try {
+            return Integer.parseInt(part.replaceAll("[^0-9]", ""));
+        } catch (NumberFormatException e) {
+            return 0;
+        }
+    }
+
     private boolean isWorkerSelfHostedScenic(Long scenicId) {
         String cacheKey = String.format(WORKER_SELF_HOSTED_CACHE_KEY, scenicId);
         String cachedValue = redisTemplate.opsForValue().get(cacheKey);
@@ -174,6 +202,13 @@ public class TaskTaskServiceImpl implements TaskService {
         worker.setStatus(null);
         // get status
         ClientStatusReqVo clientStatus = req.getClientStatus();
+        // 版本校验：上报版本低于缓存版本时认为 worker 异常
+        ClientStatusReqVo cachedStatus = repository.getWorkerHostStatus(worker.getId());
+        if (cachedStatus != null && clientStatus != null
+                && cachedStatus.getVersion() != null && clientStatus.getVersion() != null
+                && compareVersion(clientStatus.getVersion(), cachedStatus.getVersion()) < 0) {
+            return null;
+        }
         repository.setWorkerHostStatus(worker.getId(), clientStatus);
         TaskSyncRespVo resp = new TaskSyncRespVo();
         // Template
@@ -428,11 +463,11 @@ public class TaskTaskServiceImpl implements TaskService {
                     taskEntity.setTemplateId(templateId);
                     taskEntity.setAutomatic(automatic ? 1 : 0);
                 }
-                taskEntity.setWorkerId(null);
                 taskEntity.setStatus(0);
                 taskEntity.setTaskParams(JacksonUtil.toJSONString(sourcesMap));
                 if (isReuseOldTask) {
                     taskMapper.update(taskEntity);
+                    taskMapper.deassign(taskEntity.getId());
                     log.info("更新旧任务! taskId:{}", taskEntity.getId());
                 } else {
                     taskMapper.add(taskEntity);