diff --git a/web/app/components/workflow/collaboration/core/__tests__/collaboration-manager.syncNodes.test.ts b/web/app/components/workflow/collaboration/core/__tests__/collaboration-manager.syncNodes.test.ts
index 5c6596c9d6..f2ddc9f833 100644
--- a/web/app/components/workflow/collaboration/core/__tests__/collaboration-manager.syncNodes.test.ts
+++ b/web/app/components/workflow/collaboration/core/__tests__/collaboration-manager.syncNodes.test.ts
@@ -17,6 +17,12 @@ type WorkflowVariable = {
   variable: string
 }
 
+type PromptTemplateItem = {
+  id: string
+  role: string
+  text: string
+}
+
 const createVariable = (name: string, overrides: Partial<WorkflowVariable> = {}): WorkflowVariable => ({
   default: '',
   hint: '',
@@ -53,6 +59,43 @@ const createNodeSnapshot = (variableNames: string[]): Node<{ variables: Workflow
   },
 })
 
+const LLM_NODE_ID = 'llm-node'
+
+const createLLMNodeSnapshot = (promptTemplates: PromptTemplateItem[]): Node<any> => ({
+  id: LLM_NODE_ID,
+  type: 'custom',
+  position: { x: 200, y: 120 },
+  positionAbsolute: { x: 200, y: 120 },
+  height: 320,
+  width: 460,
+  selected: false,
+  selectable: true,
+  draggable: true,
+  sourcePosition: 'right',
+  targetPosition: 'left',
+  data: {
+    type: 'llm',
+    title: 'LLM',
+    selected: false,
+    context: {
+      enabled: false,
+      variable_selector: [],
+    },
+    model: {
+      mode: 'chat',
+      name: 'gemini-2.5-pro',
+      provider: 'langgenius/gemini/google',
+      completion_params: {
+        temperature: 0.7,
+      },
+    },
+    vision: {
+      enabled: false,
+    },
+    prompt_template: promptTemplates,
+  },
+})
+
 const getVariables = (node: Node): string[] => {
   const variables = (node.data as any)?.variables ?? []
   return variables.map((item: WorkflowVariable) => item.variable)
@@ -63,6 +106,10 @@ const getVariableObject = (node: Node, name: string): WorkflowVariable | undefin
   return variables.find((item: WorkflowVariable) => item.variable === name)
 }
 
+const getPromptTemplates = (node: Node): PromptTemplateItem[] => {
+  return ((node.data as any)?.prompt_template ?? []) as PromptTemplateItem[]
+}
+
 describe('CollaborationManager syncNodes', () => {
   let manager: CollaborationManager
 
@@ -177,4 +224,59 @@ describe('CollaborationManager syncNodes', () => {
     expect(finalVariables).toEqual(['a', 'b'])
     expect(getVariableObject(finalNode!, 'b')).toBeDefined()
   })
+
+  it('synchronizes prompt_template list updates across collaborators', () => {
+    const promptManager = new CollaborationManager()
+    const doc = new LoroDoc()
+    ;(promptManager as any).doc = doc
+    ;(promptManager as any).nodesMap = doc.getMap('nodes')
+    ;(promptManager as any).edgesMap = doc.getMap('edges')
+
+    const baseTemplate = [
+      {
+        id: 'abcfa5f9-3c44-4252-aeba-4b6eaf0acfc4',
+        role: 'system',
+        text: 'avc',
+      },
+    ]
+
+    const baseNode = createLLMNodeSnapshot(baseTemplate)
+    ;(promptManager as any).syncNodes([], [deepClone(baseNode)])
+
+    const updatedTemplates = [
+      ...baseTemplate,
+      {
+        id: 'user-1',
+        role: 'user',
+        text: 'hello world',
+      },
+    ]
+
+    const updatedNode = createLLMNodeSnapshot(updatedTemplates)
+    ;(promptManager as any).syncNodes([deepClone(baseNode)], [deepClone(updatedNode)])
+
+    const stored = (promptManager.getNodes() as Node[]).find(node => node.id === LLM_NODE_ID)
+    expect(stored).toBeDefined()
+
+    const storedTemplates = getPromptTemplates(stored!)
+    expect(storedTemplates).toHaveLength(2)
+    expect(storedTemplates[0]).toEqual(baseTemplate[0])
+    expect(storedTemplates[1]).toEqual(updatedTemplates[1])
+
+    const editedTemplates = [
+      {
+        id: 'abcfa5f9-3c44-4252-aeba-4b6eaf0acfc4',
+        role: 'system',
+        text: 'updated system prompt',
+      },
+    ]
+    const editedNode = createLLMNodeSnapshot(editedTemplates)
+
+    ;(promptManager as any).syncNodes([deepClone(updatedNode)], [deepClone(editedNode)])
+
+    const final = (promptManager.getNodes() as Node[]).find(node => node.id === LLM_NODE_ID)
+    const finalTemplates = getPromptTemplates(final!)
+    expect(finalTemplates).toHaveLength(1)
+    expect(finalTemplates[0].text).toBe('updated system prompt')
+  })
 })
diff --git a/web/app/components/workflow/collaboration/core/collaboration-manager.ts b/web/app/components/workflow/collaboration/core/collaboration-manager.ts
index b6047cae0e..d1ebbf119b 100644
--- a/web/app/components/workflow/collaboration/core/collaboration-manager.ts
+++ b/web/app/components/workflow/collaboration/core/collaboration-manager.ts
@@ -77,6 +77,16 @@ export class CollaborationManager {
     return typeof list.getAttached === 'function' ? list.getAttached() ?? list : list
   }
 
+  private ensurePromptTemplateList(nodeContainer: LoroMap<any>): LoroList<any> {
+    const dataContainer = this.ensureDataContainer(nodeContainer)
+    let list = dataContainer.get('prompt_template') as any
+
+    if (!list || typeof list.kind !== 'function' || list.kind() !== 'List')
+      list = dataContainer.setContainer('prompt_template', new LoroList())
+
+    return typeof list.getAttached === 'function' ? list.getAttached() ?? list : list
+  }
+
   private exportNode(nodeId: string): Node {
     const container = this.getNodeContainer(nodeId)
     const json = container.toJSON() as any
@@ -139,6 +149,8 @@ export class CollaborationManager {
 
       if (key === 'variables')
         this.syncVariables(container, Array.isArray(value) ? value : [])
+      else if (key === 'prompt_template')
+        this.syncPromptTemplate(container, Array.isArray(value) ? value : [])
       else
         dataContainer.set(key, cloneDeep(value))
     })
@@ -150,6 +162,8 @@ export class CollaborationManager {
 
       if (key === 'variables')
         dataContainer.delete('variables')
+      else if (key === 'prompt_template')
+        dataContainer.delete('prompt_template')
 
       else
         dataContainer.delete(key)
@@ -183,6 +197,28 @@ export class CollaborationManager {
     }
   }
 
+  private syncPromptTemplate(nodeContainer: LoroMap<any>, desired: any[]): void {
+    const list = this.ensurePromptTemplateList(nodeContainer)
+    const current = list.toJSON() as any[]
+    const target = Array.isArray(desired) ? desired : []
+    const minLength = Math.min(current.length, target.length)
+
+    for (let i = 0; i < minLength; i += 1) {
+      if (!isEqual(current[i], target[i])) {
+        list.delete(i, 1)
+        list.insert(i, cloneDeep(target[i]))
+      }
+    }
+
+    if (current.length > target.length) {
+      list.delete(target.length, current.length - target.length)
+    }
+    else if (target.length > current.length) {
+      for (let i = current.length; i < target.length; i += 1)
+        list.insert(i, cloneDeep(target[i]))
+    }
+  }
+
   private getNodePanelPresenceSnapshot(): NodePanelPresenceMap {
     const snapshot: NodePanelPresenceMap = {}
     Object.entries(this.nodePanelPresence).forEach(([nodeId, viewers]) => {