diff --git a/web/app/components/snippets/components/snippet-main.tsx b/web/app/components/snippets/components/snippet-main.tsx
index 770404acca..795d644752 100644
--- a/web/app/components/snippets/components/snippet-main.tsx
+++ b/web/app/components/snippets/components/snippet-main.tsx
@@ -23,6 +23,8 @@ import { useStore as useAppStore } from '@/app/components/app/store'
 import { toast } from '@/app/components/base/ui/toast'
 import Evaluation from '@/app/components/evaluation'
 import { WorkflowWithInnerContext } from '@/app/components/workflow'
+import { useAvailableNodesMetaData } from '@/app/components/workflow-app/hooks'
+import { BlockEnum } from '@/app/components/workflow/types'
 import useBreakpoints, { MediaType } from '@/hooks/use-breakpoints'
 import { useConfigsMap } from '../hooks/use-configs-map'
 import { useNodesSyncDraft } from '../hooks/use-nodes-sync-draft'
@@ -66,6 +68,25 @@ const SnippetMain = ({
   } = useNodesSyncDraft(snippetId)
   const { handleRefreshWorkflowDraft } = useSnippetRefreshDraft(snippetId)
   const configsMap = useConfigsMap(snippetId)
+  const workflowAvailableNodesMetaData = useAvailableNodesMetaData()
+  const availableNodesMetaData = useMemo(() => {
+    const nodes = workflowAvailableNodesMetaData.nodes.filter(node =>
+      node.metaData.type !== BlockEnum.HumanInput && node.metaData.type !== BlockEnum.End)
+
+    if (!workflowAvailableNodesMetaData.nodesMap)
+      return { nodes }
+
+    const {
+      [BlockEnum.HumanInput]: _humanInput,
+      [BlockEnum.End]: _end,
+      ...nodesMap
+    } = workflowAvailableNodesMetaData.nodesMap
+
+    return {
+      nodes,
+      nodesMap,
+    }
+  }, [workflowAvailableNodesMetaData])
   const setAppSidebarExpand = useAppStore(state => state.setAppSidebarExpand)
   const {
     editingField,
@@ -150,9 +171,10 @@ const SnippetMain = ({
       doSyncWorkflowDraft,
       syncWorkflowDraftWhenPageClose,
       handleRefreshWorkflowDraft,
+      availableNodesMetaData,
       configsMap,
     }
-  }, [configsMap, doSyncWorkflowDraft, handleRefreshWorkflowDraft, syncWorkflowDraftWhenPageClose])
+  }, [availableNodesMetaData, configsMap, doSyncWorkflowDraft, handleRefreshWorkflowDraft, syncWorkflowDraftWhenPageClose])
 
   return (
     <div className="relative flex h-full overflow-hidden bg-background-body">
@@ -190,7 +212,7 @@ const SnippetMain = ({
                   nodes={nodes}
                   edges={edges}
                   viewport={viewport ?? graph.viewport}
-                  hooksStore={hooksStore}
+                  hooksStore={hooksStore as any}
                 >
                   <SnippetChildren
                     snippetId={snippetId}
diff --git a/web/app/components/workflow/block-selector/hooks.ts b/web/app/components/workflow/block-selector/hooks.ts
index 3a05bc09cc..7447ccb16a 100644
--- a/web/app/components/workflow/block-selector/hooks.ts
+++ b/web/app/components/workflow/block-selector/hooks.ts
@@ -40,6 +40,7 @@ export const useTabs = ({
   noStart = true,
   defaultActiveTab,
   hasUserInputNode = false,
+  disableStartTab = false,
   forceEnableStartTab = false, // When true, Start tab remains enabled even if trigger/user input nodes already exist.
 }: {
   noBlocks?: boolean
@@ -48,11 +49,15 @@ export const useTabs = ({
   noStart?: boolean
   defaultActiveTab?: TabsEnum
   hasUserInputNode?: boolean
+  disableStartTab?: boolean
   forceEnableStartTab?: boolean
 }) => {
   const { t } = useTranslation()
   const shouldShowStartTab = !noStart
-  const shouldDisableStartTab = !forceEnableStartTab && hasUserInputNode
+  const shouldDisableStartTab = disableStartTab || (!forceEnableStartTab && hasUserInputNode)
+  const startDisabledTip = disableStartTab
+    ? t('tabs.startNotSupportedTip', { ns: 'workflow' })
+    : t('tabs.startDisabledTip', { ns: 'workflow' })
   const tabs = useMemo(() => {
     const tabConfigs = [{
       key: TabsEnum.Blocks,
@@ -71,6 +76,7 @@ export const useTabs = ({
       name: t('tabs.start', { ns: 'workflow' }),
       show: shouldShowStartTab,
       disabled: shouldDisableStartTab,
+      disabledTip: shouldDisableStartTab ? startDisabledTip : undefined,
     }, {
       key: TabsEnum.Snippets,
       name: t('tabs.snippets', { ns: 'workflow' }),
@@ -78,7 +84,7 @@ export const useTabs = ({
     }]
 
     return tabConfigs.filter(tab => tab.show)
-  }, [t, noBlocks, noSources, noTools, shouldShowStartTab, shouldDisableStartTab])
+  }, [t, noBlocks, noSources, noTools, shouldShowStartTab, shouldDisableStartTab, startDisabledTip])
 
   const getValidTabKey = useCallback((targetKey?: TabsEnum) => {
     if (!targetKey)
diff --git a/web/app/components/workflow/block-selector/main.tsx b/web/app/components/workflow/block-selector/main.tsx
index 9511d02e16..cf647d9d67 100644
--- a/web/app/components/workflow/block-selector/main.tsx
+++ b/web/app/components/workflow/block-selector/main.tsx
@@ -30,7 +30,9 @@ import {
   PortalToFollowElemTrigger,
 } from '@/app/components/base/portal-to-follow-elem'
 import SearchBox from '@/app/components/plugins/marketplace/search-box'
+import { useHooksStore } from '@/app/components/workflow/hooks-store'
 import useNodes from '@/app/components/workflow/store/workflow/use-nodes'
+import { FlowType } from '@/types/common'
 import { BlockEnum, isTriggerNode } from '../types'
 import { useTabs } from './hooks'
 import Snippets from './snippets'
@@ -89,6 +91,7 @@ const NodeSelector: FC<NodeSelectorProps> = ({
 }) => {
   const { t } = useTranslation()
   const nodes = useNodes()
+  const flowType = useHooksStore(s => s.configsMap?.flowType)
   const [searchText, setSearchText] = useState('')
   const [snippetsLoading, setSnippetsLoading] = useState(() => Boolean(openFromProps) && defaultActiveTab === TabsEnum.Snippets)
   const [tags, setTags] = useState<string[]>([])
@@ -122,6 +125,7 @@ const NodeSelector: FC<NodeSelectorProps> = ({
   // Default rule: user input option is only available when no Start node nor Trigger node exists on canvas.
   const defaultAllowUserInputSelection = !hasUserInputNode && !hasTriggerNode
   const canSelectUserInput = allowUserInputSelection ?? defaultAllowUserInputSelection
+  const disableStartTab = flowType === FlowType.snippet
   const {
     activeTab,
     setActiveTab,
@@ -133,6 +137,7 @@ const NodeSelector: FC<NodeSelectorProps> = ({
     noStart: !showStartTab,
     defaultActiveTab,
     hasUserInputNode,
+    disableStartTab,
     forceEnableStartTab,
   })
   const open = openFromProps === undefined ? localOpen : openFromProps
diff --git a/web/app/components/workflow/block-selector/tabs.tsx b/web/app/components/workflow/block-selector/tabs.tsx
index b1ca318fd2..b0658d371c 100644
--- a/web/app/components/workflow/block-selector/tabs.tsx
+++ b/web/app/components/workflow/block-selector/tabs.tsx
@@ -34,6 +34,7 @@ export type TabsProps = {
     key: TabsEnum
     name: string
     disabled?: boolean
+    disabledTip?: string
   }>
   filterElem: React.ReactNode
   noBlocks?: boolean
@@ -225,7 +226,7 @@ const Tabs: FC<TabsProps> = ({
                   tab={tab}
                   activeTab={activeTab}
                   onActiveTabChange={onActiveTabChange}
-                  disabledTip={disabledTip}
+                  disabledTip={tab.disabledTip || disabledTip}
                 />
               ))
             }
diff --git a/web/eslint-suppressions.json b/web/eslint-suppressions.json
index 98d2976f8e..d787164407 100644
--- a/web/eslint-suppressions.json
+++ b/web/eslint-suppressions.json
@@ -177,6 +177,11 @@
       "count": 2
     }
   },
+  "app/(commonLayout)/snippets/[snippetId]/page.tsx": {
+    "no-restricted-imports": {
+      "count": 1
+    }
+  },
   "app/(humanInputLayout)/form/[token]/form.tsx": {
     "react/set-state-in-effect": {
       "count": 1
@@ -4917,6 +4922,11 @@
       "count": 2
     }
   },
+  "app/components/evaluation/index.tsx": {
+    "no-restricted-imports": {
+      "count": 1
+    }
+  },
   "app/components/explore/banner/banner-item.tsx": {
     "react-hooks-extra/no-direct-set-state-in-use-effect": {
       "count": 1
@@ -6686,6 +6696,11 @@
       "count": 2
     }
   },
+  "app/components/snippets/components/snippet-main.tsx": {
+    "ts/no-explicit-any": {
+      "count": 1
+    }
+  },
   "app/components/tools/edit-custom-collection-modal/config-credentials.tsx": {
     "no-restricted-imports": {
       "count": 1
@@ -10487,6 +10502,11 @@
       "count": 7
     }
   },
+  "service/use-evaluation.ts": {
+    "no-barrel-files/no-barrel-files": {
+      "count": 2
+    }
+  },
   "service/use-flow.ts": {
     "react/no-unnecessary-use-prefix": {
       "count": 1
diff --git a/web/i18n/en-US/workflow.json b/web/i18n/en-US/workflow.json
index a6803329ff..586db51ad5 100644
--- a/web/i18n/en-US/workflow.json
+++ b/web/i18n/en-US/workflow.json
@@ -1148,6 +1148,7 @@
   "tabs.sources": "Sources",
   "tabs.start": "Start",
   "tabs.startDisabledTip": "Trigger node and user input node are mutually exclusive.",
+  "tabs.startNotSupportedTip": "The Start tab is not supported in snippets.",
   "tabs.tools": "Tools",
   "tabs.transform": "Transform",
   "tabs.usePlugin": "Select tool",
diff --git a/web/i18n/zh-Hans/workflow.json b/web/i18n/zh-Hans/workflow.json
index e98af59a4c..ae8fd5305d 100644
--- a/web/i18n/zh-Hans/workflow.json
+++ b/web/i18n/zh-Hans/workflow.json
@@ -1148,6 +1148,7 @@
   "tabs.sources": "数据源",
   "tabs.start": "开始",
   "tabs.startDisabledTip": "触发节点与用户输入节点互斥。",
+  "tabs.startNotSupportedTip": "Snippet 暂不支持 Start 标签。",
   "tabs.tools": "工具",
   "tabs.transform": "转换",
   "tabs.usePlugin": "选择工具",