diff --git a/apps/audits/backends/db.py b/apps/audits/backends/db.py
index aa60b3569..5acae53cc 100644
--- a/apps/audits/backends/db.py
+++ b/apps/audits/backends/db.py
@@ -69,12 +69,11 @@ class OperateLogStore(object):
             before.update(op_before)
             after.update(op_after)
         else:
-            # 限制长度 128 OperateLog.resource.field.max_length
+            # 限制长度 128 OperateLog.resource.field.max_length, 避免存储失败
             max_length = 128
             resource = kwargs.get('resource', '')
-            if isinstance(resource, str) and (len(resource) > max_length):
-                # 截取字符串
-                kwargs.update({'resource': resource[:max_length]})
+            if resource and isinstance(resource, str):
+                kwargs['resource'] = resource[:max_length]
             op_log = self.model(**kwargs)
 
         diff = self.convert_before_after_to_diff(before, after)