diff --git a/packages/plugins/@nocobase/plugin-workflow/src/server/Plugin.ts b/packages/plugins/@nocobase/plugin-workflow/src/server/Plugin.ts
index a9abb48bee..794b1dc158 100644
--- a/packages/plugins/@nocobase/plugin-workflow/src/server/Plugin.ts
+++ b/packages/plugins/@nocobase/plugin-workflow/src/server/Plugin.ts
@@ -15,7 +15,7 @@ import LRUCache from 'lru-cache';
 
 import { Op } from '@nocobase/database';
 import { Plugin } from '@nocobase/server';
-import { Registry } from '@nocobase/utils';
+import { Registry, uid } from '@nocobase/utils';
 import { SequelizeCollectionManager } from '@nocobase/data-source-manager';
 import { Logger, LoggerOptions } from '@nocobase/logger';
 
@@ -75,6 +75,10 @@ export default class PluginWorkflowServer extends Plugin {
   private onBeforeSave = async (instance: WorkflowModel, { transaction }) => {
     const Model = <typeof WorkflowModel>instance.constructor;
 
+    if (!instance.key) {
+      instance.set('key', uid());
+    }
+
     if (instance.enabled) {
       instance.set('current', true);
     }