diff --git a/platformapi/dingdingapi/dingdingapi.go b/platformapi/dingdingapi/dingdingapi.go
index 9ab44428..eec7c5f0 100644
--- a/platformapi/dingdingapi/dingdingapi.go
+++ b/platformapi/dingdingapi/dingdingapi.go
@@ -128,7 +128,7 @@ func (a *API) AccessAPI(action string, params map[string]interface{}, bodyMap ma
 		params2["access_token"] = accessToken
 	} else {
 		params2["accessKey"] = a.GetAppID()
-		timestamp := time.Now().Unix()
+		timestamp := time.Now().UnixNano() / 1000000
 		params2["timestamp"] = timestamp
 		params2["signature"] = a.signParams(timestamp)
 	}