diff --git a/packages/plugins/@nocobase/plugin-workflow/src/server/__tests__/triggers/schedule/mode-static.test.ts b/packages/plugins/@nocobase/plugin-workflow/src/server/__tests__/triggers/schedule/mode-static.test.ts
index 7f74f8cbd0..8be1efcefa 100644
--- a/packages/plugins/@nocobase/plugin-workflow/src/server/__tests__/triggers/schedule/mode-static.test.ts
+++ b/packages/plugins/@nocobase/plugin-workflow/src/server/__tests__/triggers/schedule/mode-static.test.ts
@@ -3,6 +3,8 @@ import { MockServer } from '@nocobase/test';
 import Database from '@nocobase/database';
 import { getApp, sleep } from '@nocobase/plugin-workflow-test';
 
+import Plugin from '../../..';
+
 async function sleepToEvenSecond() {
   const now = new Date();
   // NOTE: align to even(0, 2, ...) + 0.5 seconds to start
@@ -23,7 +25,6 @@ describe('workflow > triggers > schedule > static mode', () => {
   let db: Database;
   let PostRepo;
   let CategoryRepo;
-  let WorkflowModel;
   let WorkflowRepo;
 
   beforeEach(async () => {
@@ -31,7 +32,6 @@ describe('workflow > triggers > schedule > static mode', () => {
 
     db = app.db;
     const workflow = db.getCollection('workflows');
-    WorkflowModel = workflow.model;
     WorkflowRepo = workflow.repository;
     PostRepo = db.getCollection('posts').repository;
     CategoryRepo = db.getCollection('categories').repository;
@@ -41,11 +41,13 @@ describe('workflow > triggers > schedule > static mode', () => {
 
   describe('configuration', () => {
     it('neither startsOn nor repeat configurated', async () => {
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+          },
         },
       });
 
@@ -62,12 +64,14 @@ describe('workflow > triggers > schedule > static mode', () => {
       start.setMilliseconds(0);
       start.setSeconds(start.getSeconds() + 2);
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+          },
         },
       });
 
@@ -80,13 +84,15 @@ describe('workflow > triggers > schedule > static mode', () => {
     it('on every 2 seconds', async () => {
       const start = await sleepToEvenSecond();
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
-          repeat: '*/2 * * * * *',
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+            repeat: '*/2 * * * * *',
+          },
         },
       });
 
@@ -101,14 +107,16 @@ describe('workflow > triggers > schedule > static mode', () => {
     it('on every even seconds and limit 1', async () => {
       const start = await sleepToEvenSecond();
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
-          repeat: '*/2 * * * * *',
-          limit: 1,
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+            repeat: '*/2 * * * * *',
+            limit: 1,
+          },
         },
       });
 
@@ -123,14 +131,16 @@ describe('workflow > triggers > schedule > static mode', () => {
       const start = new Date();
       start.setMilliseconds(0);
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
-          repeat: 2000,
-          limit: 1,
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+            repeat: 2000,
+            limit: 1,
+          },
         },
       });
 
@@ -149,13 +159,15 @@ describe('workflow > triggers > schedule > static mode', () => {
 
       await sleep(1500);
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn,
-          repeat: `${now.getSeconds()} * * * * *`,
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn,
+            repeat: `${now.getSeconds()} * * * * *`,
+          },
         },
       });
 
@@ -170,12 +182,14 @@ describe('workflow > triggers > schedule > static mode', () => {
     it('no repeat triggered then update to repeat', async () => {
       const start = await sleepToEvenSecond();
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+          },
         },
       });
 
@@ -207,13 +221,15 @@ describe('workflow > triggers > schedule > static mode', () => {
       const future = new Date();
       future.setSeconds(future.getSeconds() + 2);
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: future.toISOString(),
-          repeat: 1000,
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: future.toISOString(),
+            repeat: 1000,
+          },
         },
       });
 
@@ -265,7 +281,10 @@ describe('workflow > triggers > schedule > static mode', () => {
       });
 
       await sleep(3000);
-      await WorkflowModel.update({ enabled: false }, { where: { enabled: true } });
+      await WorkflowRepo.update({
+        values: { enabled: false },
+        filter: { enabled: true },
+      });
 
       const [e1] = await w1.getExecutions();
       expect(e1).toBeDefined();
@@ -287,12 +306,14 @@ describe('workflow > triggers > schedule > static mode', () => {
       start.setMilliseconds(0);
       start.setSeconds(start.getSeconds() + 2);
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+          },
         },
       });
 
@@ -315,12 +336,14 @@ describe('workflow > triggers > schedule > static mode', () => {
       start.setMilliseconds(0);
       start.setSeconds(start.getSeconds() + 2);
 
-      const workflow = await WorkflowModel.create({
-        enabled: true,
-        type: 'schedule',
-        config: {
-          mode: 0,
-          startsOn: start.toISOString(),
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+          },
         },
       });
 
@@ -337,4 +360,32 @@ describe('workflow > triggers > schedule > static mode', () => {
       expect(c2).toBe(1);
     });
   });
+
+  describe('duplications', () => {
+    it('same workflow should not be triggered in same time more than once', async () => {
+      await sleepToEvenSecond();
+
+      const start = new Date();
+      start.setMilliseconds(0);
+      start.setSeconds(start.getSeconds() + 2);
+
+      const workflow = await WorkflowRepo.create({
+        values: {
+          enabled: true,
+          type: 'schedule',
+          config: {
+            mode: 0,
+            startsOn: start.toISOString(),
+          },
+        },
+      });
+
+      (app.pm.get('workflow') as Plugin).trigger(workflow, { date: start });
+
+      await sleep(3000);
+
+      const e1s = await workflow.getExecutions();
+      expect(e1s.length).toBe(1);
+    });
+  });
 });
diff --git a/packages/plugins/@nocobase/plugin-workflow/src/server/triggers/ScheduleTrigger/index.ts b/packages/plugins/@nocobase/plugin-workflow/src/server/triggers/ScheduleTrigger/index.ts
index 8a23d7b4fa..7f11b42ab1 100644
--- a/packages/plugins/@nocobase/plugin-workflow/src/server/triggers/ScheduleTrigger/index.ts
+++ b/packages/plugins/@nocobase/plugin-workflow/src/server/triggers/ScheduleTrigger/index.ts
@@ -44,7 +44,7 @@ export default class ScheduleTrigger extends Trigger {
     }
     const existed = await workflow.countExecutions({
       where: {
-        'context.date': context.date,
+        'context.date': context.date instanceof Date ? context.date.toISOString() : context.date,
       },
       transaction: options.transaction,
     });