diff --git a/web/app/components/app/app-publisher/index.tsx b/web/app/components/app/app-publisher/index.tsx
index 64ce869c5d..a11af3b816 100644
--- a/web/app/components/app/app-publisher/index.tsx
+++ b/web/app/components/app/app-publisher/index.tsx
@@ -49,6 +49,7 @@ import { fetchInstalledAppList } from '@/service/explore'
 import { AppModeEnum } from '@/types/app'
 import type { PublishWorkflowParams } from '@/types/workflow'
 import { basePath } from '@/utils/var'
+import UpgradeBtn from '@/app/components/billing/upgrade-btn'
 
 const ACCESS_MODE_MAP: Record<AccessMode, { label: string, icon: React.ElementType }> = {
   [AccessMode.ORGANIZATION]: {
@@ -106,6 +107,7 @@ export type AppPublisherProps = {
   workflowToolAvailable?: boolean
   missingStartNode?: boolean
   hasTriggerNode?: boolean // Whether workflow currently contains any trigger nodes (used to hide missing-start CTA when triggers exist).
+  startNodeLimitExceeded?: boolean
 }
 
 const PUBLISH_SHORTCUT = ['ctrl', '⇧', 'P']
@@ -127,6 +129,7 @@ const AppPublisher = ({
   workflowToolAvailable = true,
   missingStartNode = false,
   hasTriggerNode = false,
+  startNodeLimitExceeded = false,
 }: AppPublisherProps) => {
   const { t } = useTranslation()
 
@@ -246,6 +249,13 @@ const AppPublisher = ({
   const hasPublishedVersion = !!publishedAt
   const workflowToolDisabled = !hasPublishedVersion || !workflowToolAvailable
   const workflowToolMessage = workflowToolDisabled ? t('workflow.common.workflowAsToolDisabledHint') : undefined
+  const showStartNodeLimitHint = Boolean(startNodeLimitExceeded)
+  const upgradeHighlightStyle = useMemo(() => ({
+    background: 'linear-gradient(97deg, var(--components-input-border-active-prompt-1, rgba(11, 165, 236, 0.95)) -3.64%, var(--components-input-border-active-prompt-2, rgba(21, 90, 239, 0.95)) 45.14%)',
+    WebkitBackgroundClip: 'text',
+    backgroundClip: 'text',
+    WebkitTextFillColor: 'transparent',
+  }), [])
 
   return (
     <>
@@ -304,29 +314,49 @@ const AppPublisher = ({
                   />
                 )
                 : (
-                  <Button
-                    variant='primary'
-                    className='mt-3 w-full'
-                    onClick={() => handlePublish()}
-                    disabled={publishDisabled || published}
-                  >
-                    {
-                      published
-                        ? t('workflow.common.published')
-                        : (
-                          <div className='flex gap-1'>
-                            <span>{t('workflow.common.publishUpdate')}</span>
-                            <div className='flex gap-0.5'>
-                              {PUBLISH_SHORTCUT.map(key => (
-                                <span key={key} className='system-kbd h-4 w-4 rounded-[4px] bg-components-kbd-bg-white text-text-primary-on-surface'>
-                                  {getKeyboardKeyNameBySystem(key)}
-                                </span>
-                              ))}
+                  <>
+                    <Button
+                      variant='primary'
+                      className='mt-3 w-full'
+                      onClick={() => handlePublish()}
+                      disabled={publishDisabled || published}
+                    >
+                      {
+                        published
+                          ? t('workflow.common.published')
+                          : (
+                            <div className='flex gap-1'>
+                              <span>{t('workflow.common.publishUpdate')}</span>
+                              <div className='flex gap-0.5'>
+                                {PUBLISH_SHORTCUT.map(key => (
+                                  <span key={key} className='system-kbd h-4 w-4 rounded-[4px] bg-components-kbd-bg-white text-text-primary-on-surface'>
+                                    {getKeyboardKeyNameBySystem(key)}
+                                  </span>
+                                ))}
+                              </div>
                             </div>
-                          </div>
-                        )
-                    }
-                  </Button>
+                          )
+                      }
+                    </Button>
+                    {showStartNodeLimitHint && (
+                      <div className='mt-3 flex flex-col items-stretch'>
+                        <p
+                          className='text-sm font-semibold leading-5 text-transparent'
+                          style={upgradeHighlightStyle}
+                        >
+                          <span className='block'>{t('workflow.publishLimit.startNodeTitlePrefix')}</span>
+                          <span className='block'>{t('workflow.publishLimit.startNodeTitleSuffix')}</span>
+                        </p>
+                        <p className='mt-1 text-xs leading-4 text-text-secondary'>
+                          {t('workflow.publishLimit.startNodeDesc')}
+                        </p>
+                        <UpgradeBtn
+                          isShort
+                          className='mb-[12px] mt-[9px] h-[32px] w-[93px] self-start'
+                        />
+                      </div>
+                    )}
+                  </>
                 )
               }
             </div>
diff --git a/web/app/components/billing/upgrade-btn/index.tsx b/web/app/components/billing/upgrade-btn/index.tsx
index f3ae95a10b..766a5883d6 100644
--- a/web/app/components/billing/upgrade-btn/index.tsx
+++ b/web/app/components/billing/upgrade-btn/index.tsx
@@ -1,5 +1,5 @@
 'use client'
-import type { FC } from 'react'
+import type { CSSProperties, FC } from 'react'
 import React from 'react'
 import { useTranslation } from 'react-i18next'
 import PremiumBadge from '../../base/premium-badge'
@@ -9,6 +9,7 @@ import { useModalContext } from '@/context/modal-context'
 
 type Props = {
   className?: string
+  style?: CSSProperties
   isFull?: boolean
   size?: 'md' | 'lg'
   isPlain?: boolean
@@ -18,6 +19,8 @@ type Props = {
 }
 
 const UpgradeBtn: FC<Props> = ({
+  className,
+  style,
   isPlain = false,
   isShort = false,
   onClick: _onClick,
@@ -42,7 +45,11 @@ const UpgradeBtn: FC<Props> = ({
 
   if (isPlain) {
     return (
-      <Button onClick={onClick}>
+      <Button
+        className={className}
+        style={style}
+        onClick={onClick}
+      >
         {t('billing.upgradeBtn.plain')}
       </Button>
     )
@@ -54,6 +61,8 @@ const UpgradeBtn: FC<Props> = ({
       color='blue'
       allowHover={true}
       onClick={onClick}
+      className={className}
+      style={style}
     >
       <SparklesSoft className='flex h-3.5 w-3.5 items-center py-[1px] pl-[3px] text-components-premium-badge-indigo-text-stop-0' />
       <div className='system-xs-medium'>
diff --git a/web/app/components/workflow-app/components/workflow-header/features-trigger.tsx b/web/app/components/workflow-app/components/workflow-header/features-trigger.tsx
index d229006177..28a2f43fe5 100644
--- a/web/app/components/workflow-app/components/workflow-header/features-trigger.tsx
+++ b/web/app/components/workflow-app/components/workflow-header/features-trigger.tsx
@@ -40,6 +40,8 @@ import useTheme from '@/hooks/use-theme'
 import cn from '@/utils/classnames'
 import { useIsChatMode } from '@/app/components/workflow/hooks'
 import type { StartNodeType } from '@/app/components/workflow/nodes/start/types'
+import { useProviderContext } from '@/context/provider-context'
+import { Plan } from '@/app/components/billing/type'
 
 const FeaturesTrigger = () => {
   const { t } = useTranslation()
@@ -50,6 +52,7 @@ const FeaturesTrigger = () => {
   const appID = appDetail?.id
   const setAppDetail = useAppStore(s => s.setAppDetail)
   const { nodesReadOnly, getNodesReadOnly } = useNodesReadOnly()
+  const { plan, isFetchedPlan } = useProviderContext()
   const publishedAt = useStore(s => s.publishedAt)
   const draftUpdatedAt = useStore(s => s.draftUpdatedAt)
   const toolPublished = useStore(s => s.toolPublished)
@@ -95,6 +98,15 @@ const FeaturesTrigger = () => {
   const hasTriggerNode = useMemo(() => (
     nodes.some(node => isTriggerNode(node.data.type as BlockEnum))
   ), [nodes])
+  const startNodeLimitExceeded = useMemo(() => {
+    const entryCount = nodes.reduce((count, node) => {
+      const nodeType = node.data.type as BlockEnum
+      if (nodeType === BlockEnum.Start || isTriggerNode(nodeType))
+        return count + 1
+      return count
+    }, 0)
+    return isFetchedPlan && plan.type === Plan.sandbox && entryCount > 2
+  }, [nodes, plan.type, isFetchedPlan])
 
   const resetWorkflowVersionHistory = useResetWorkflowVersionHistory()
   const invalidateAppTriggers = useInvalidateAppTriggers()
@@ -196,7 +208,8 @@ const FeaturesTrigger = () => {
           crossAxisOffset: 4,
           missingStartNode: !startNode,
           hasTriggerNode,
-          publishDisabled: !hasWorkflowNodes,
+          startNodeLimitExceeded,
+          publishDisabled: !hasWorkflowNodes || startNodeLimitExceeded,
         }}
       />
     </>
diff --git a/web/i18n/en-US/workflow.ts b/web/i18n/en-US/workflow.ts
index 92a0b110c7..dd6ca77e7e 100644
--- a/web/i18n/en-US/workflow.ts
+++ b/web/i18n/en-US/workflow.ts
@@ -123,6 +123,11 @@ const translation = {
     noHistory: 'No History',
     tagBound: 'Number of apps using this tag',
   },
+  publishLimit: {
+    startNodeTitlePrefix: 'Upgrade to',
+    startNodeTitleSuffix: 'unlock unlimited start nodes',
+    startNodeDesc: 'You’ve reached the limit of 2 start nodes for your current plan. Upgrade to publish this workflow.',
+  },
   env: {
     envPanelTitle: 'Environment Variables',
     envDescription: 'Environment variables can be used to store private information and credentials. They are read-only and can be separated from the DSL file during export.',
diff --git a/web/i18n/ja-JP/workflow.ts b/web/i18n/ja-JP/workflow.ts
index 07241b8c4f..139388e280 100644
--- a/web/i18n/ja-JP/workflow.ts
+++ b/web/i18n/ja-JP/workflow.ts
@@ -119,6 +119,11 @@ const translation = {
     tagBound: 'このタグを使用しているアプリの数',
     moreActions: 'さらにアクション',
   },
+  publishLimit: {
+    startNodeTitlePrefix: 'アップグレードして',
+    startNodeTitleSuffix: '開始ノードの上限を解除',
+    startNodeDesc: '現在のプランでは開始ノードは2個までです。公開するにはプランをアップグレードしてください。',
+  },
   env: {
     envPanelTitle: '環境変数',
     envDescription: '環境変数は、個人情報や認証情報を格納するために使用することができます。これらは読み取り専用であり、DSL ファイルからエクスポートする際には分離されます。',
diff --git a/web/i18n/zh-Hans/workflow.ts b/web/i18n/zh-Hans/workflow.ts
index 18e76caa64..a7f2b03bfa 100644
--- a/web/i18n/zh-Hans/workflow.ts
+++ b/web/i18n/zh-Hans/workflow.ts
@@ -122,6 +122,11 @@ const translation = {
     noHistory: '没有历史版本',
     tagBound: '使用此标签的应用数量',
   },
+  publishLimit: {
+    startNodeTitlePrefix: '升级以',
+    startNodeTitleSuffix: '解锁无限开始节点',
+    startNodeDesc: '当前套餐最多支持 2 个开始节点。升级套餐即可发布此工作流。',
+  },
   env: {
     envPanelTitle: '环境变量',
     envDescription: '环境变量是一种存储敏感信息的方法，如 API 密钥、数据库密码等。它们被存储在工作流程中，而不是代码中，以便在不同环境中共享。',
diff --git a/web/i18n/zh-Hant/workflow.ts b/web/i18n/zh-Hant/workflow.ts
index ce053d6e5b..5917eb95ed 100644
--- a/web/i18n/zh-Hant/workflow.ts
+++ b/web/i18n/zh-Hant/workflow.ts
@@ -116,6 +116,11 @@ const translation = {
     currentWorkflow: '當前工作流程',
     moreActions: '更多動作',
   },
+  publishLimit: {
+    startNodeTitlePrefix: '升級以',
+    startNodeTitleSuffix: '解鎖無限開始節點',
+    startNodeDesc: '目前方案最多允許 2 個開始節點，升級後才能發布此工作流程。',
+  },
   env: {
     envPanelTitle: '環境變數',
     envDescription: '環境變數可用於存儲私人信息和憑證。它們是唯讀的，並且可以在導出時與 DSL 文件分開。',