diff --git a/app/controller/add_reimburse_route.py b/app/controller/add_reimburse_route.py
new file mode 100644
index 0000000..b4fc53b
--- /dev/null
+++ b/app/controller/add_reimburse_route.py
@@ -0,0 +1,89 @@
+from fastapi import FastAPI
+from langchain_core.runnables import RunnableConfig
+from langgraph.constants import START
+from langgraph.graph import StateGraph
+
+from app.model.ApproveModel import ApproveService, ApproveModel
+from app.model.ReimburseModel import ReimburseService, ReimburseModel
+from app.utils.db_utils import AsyncSessionDep
+from app.utils.postgres_checkpointer import AsyncPostgresSaverDep
+from app.workflow.approve import create_approve_graph, ApproveGraphSchema
+
+
+def add_reimburse_route(app: FastAPI):
+  # 提交报销单接口
+  @app.post('/submit_reimburse')
+  async def submit_reimburse(
+    reimburse: dict,
+    session: AsyncSessionDep,
+    checkpointer: AsyncPostgresSaverDep,
+  ):
+    reimburse_id = reimburse.get('id')
+    # 先查一遍报销单信息
+    reimburse_cls: ReimburseModel = await ReimburseService.query_item(session=session, row_dict={"id": reimburse_id})
+
+    # 1. 没有审批单——
+    # 2. 审批单为审批中状态——不处理
+    # 3. 审批单为已通过状态——不处理
+    # 4. 审批单为已驳回状态——
+    # 5. 审批单为已撤回状态——
+
+    # 2,3 的情况下不再提交报销单
+
+    if reimburse_cls.approve:
+      if reimburse_cls.approve.status == 'approving':
+        return {"message": "报销单已提交审批，请勿重复提交！"}
+      if reimburse_cls.approve.status == 'approved':
+        return {"message": "报销单已通过审批，请勿重复提交！"}
+
+    # 1,4,5 的情况下新建审批单
+    # 创建审批单，使用新的审批单走审批流程
+
+    new_approve_dict = {
+      "title": f"{reimburse_cls.user.full_name} - 报销单审批",
+      "description": reimburse_cls.title + (f" / {reimburse_cls.remarks}" if reimburse_cls.remarks else ""),
+      "status": "approving",
+      "amount": reimburse_cls.amount,
+      "logs": "[]",
+      "user_id": reimburse_cls.user_id,  # 先把审批人的id设置为申请人
+      "proj_id": reimburse_cls.proj_id,
+      "approve_from": "reimburse",
+    }
+    insert_approve_cls: ApproveModel = await ApproveService.item_insert(session=session, row_dict=new_approve_dict)
+
+    # 将审批单与报销单管理，设置报销单的approve_id为审批单的id
+    await ReimburseService.item_update(session=session, row_dict={"id": reimburse_id, "approve_id": insert_approve_cls.id}, )
+
+    reimburse_graph = create_reimburse_graph(session=session, checkpointer=checkpointer)
+
+    graph_state = await reimburse_graph.ainvoke(
+      {"input_user_id": reimburse_cls.user.id, "input_approve_id": insert_approve_cls.id, "input_amount": str(insert_approve_cls.amount)},
+      config={"configurable": {"thread_id": insert_approve_cls.id}}
+    )
+
+    return {"message": "报销单提交成功！", "graph_state": graph_state}
+
+
+def create_reimburse_graph(
+  checkpointer: AsyncPostgresSaverDep,
+  session: AsyncSessionDep,
+):
+  approve_graph = create_approve_graph(checkpointer, session)
+
+  builder = StateGraph(ApproveGraphSchema)
+
+  async def node(state: ApproveGraphSchema, config: RunnableConfig):
+    print('\n\n', ":::::::::::node start::::::::::::", '\n\n')
+    print(state)
+    print('\n\n', ":::::::::::node end::::::::::::", '\n\n')
+
+    graph_state = await approve_graph.ainvoke(state, config=config)
+    approve_flag = graph_state.get('approve_flag')
+    # 这里审批结束之后可以做一些事情，比如发送邮件、短信、微信消息等通知用户，因为没有实现对应的模块，这里就不做任何处理
+    print("报销单审批流执行结束::::::::::>>>>>>>>>>>", approve_flag)
+    return {}
+
+  builder.add_node("node", node)
+  builder.add_edge(START, "node")
+
+  return builder.compile(checkpointer=checkpointer)