diff --git a/workflow/model/dto/session/exec_workflow_dto.go b/workflow/model/dto/session/exec_workflow_dto.go
index 98557fc..ab8c87a 100644
--- a/workflow/model/dto/session/exec_workflow_dto.go
+++ b/workflow/model/dto/session/exec_workflow_dto.go
@@ -20,12 +20,13 @@ type DeleteExecWorkflowReq struct {
 }
 
 type UpdateWorkflowReq struct {
-	Id           int64                    `json:"id" v:"required#工作流执行记录ID不能为空"`
-	NodeGroupId  string                   `json:"nodeGroupId" description:"节点组ID"`
-	Status       flow.FlowExecutionStatus `json:"status" description:"状态:1-运行中,2-成功,3-失败"`
-	Duration     int64                    `json:"duration" description:"执行时长（秒）"`
-	TotalTokens  int                      `json:"totalTokens" description:"总token消耗"`
-	TotalFee     float64                  `json:"totalFee" description:"总费用"`
-	ErrorMessage string                   `json:"errorMessage" description:"错误信息（友好提示）"`
-	Error        string                   `json:"error" description:"错误明细（原始错误）"`
+	Id            int64                    `json:"id" v:"required#工作流执行记录ID不能为空"`
+	NodeGroupId   string                   `json:"nodeGroupId" description:"节点组ID"`
+	Status        flow.FlowExecutionStatus `json:"status" description:"状态:1-运行中,2-成功,3-失败"`
+	Duration      int64                    `json:"duration" description:"执行时长（秒）"`
+	TotalTokens   int                      `json:"totalTokens" description:"总token消耗"`
+	TotalFee      float64                  `json:"totalFee" description:"总费用"`
+	ErrorMessage  string                   `json:"errorMessage" description:"错误信息（友好提示）"`
+	Error         string                   `json:"error" description:"错误明细（原始错误）"`
+	RequestParams *entity.FlowInfo         `json:"requestParams" description:"请求参数"`
 }
diff --git a/workflow/service/flow/flow_graph_builder.go b/workflow/service/flow/flow_graph_builder.go
index c0be8fe..9910901 100644
--- a/workflow/service/flow/flow_graph_builder.go
+++ b/workflow/service/flow/flow_graph_builder.go
@@ -143,7 +143,7 @@ func BuildGraph(ctx context.Context, flowContent *entity.FlowInfo) ([]entity.Flo
 // BuildGraphFromFlowContent 根据前端保存的工作流JSON，自动构建执行图并编译
 func BuildGraphFromFlowContent(ctx context.Context, flowContent *entity.FlowInfo) ([]entity.FlowNode, compose.Runnable[any, any], error) {
 	nodeList, graph := BuildGraph(ctx, flowContent)
-	compile, err := graph.Compile(ctx, compose.WithGraphName("auto_build_workflow"), compose.WithCheckPointStore(NewDbCheckPointStore()))
+	compile, err := graph.Compile(ctx, compose.WithGraphName("auto_build_workflow"), compose.WithCheckPointStore(NewDbCheckPointStore()), compose.WithNodeTriggerMode(compose.AllPredecessor))
 	return nodeList, compile, err
 }
 
@@ -225,7 +225,7 @@ func registerNodeToGraph(graph *compose.Graph[any, any], flowNode entity.FlowNod
 	case node.NodeTypeForm:
 		_ = graph.AddLambdaNode(flowNode.Id, compose.InvokableLambda(wrapLambda(FormLambda)))
 	case node.NodeTypeDataMerge:
-		_ = graph.AddLambdaNode(flowNode.Id, compose.InvokableLambda(wrapLambda(DataMergeLambda)), compose.WithGraphCompileOptions(compose.WithNodeTriggerMode(compose.AllPredecessor)))
+		_ = graph.AddLambdaNode(flowNode.Id, compose.InvokableLambda(wrapLambda(DataMergeLambda)))
 	case node.NodeTypeSubFlow:
 		_ = graph.AddLambdaNode(flowNode.Id, compose.InvokableLambda(wrapLambda(SubFlowLambda)))
 	case node.NodeTypeHttp:
diff --git a/workflow/service/flow/flow_ws_exec.go b/workflow/service/flow/flow_ws_exec.go
index 205ebca..7c5153b 100644
--- a/workflow/service/flow/flow_ws_exec.go
+++ b/workflow/service/flow/flow_ws_exec.go
@@ -268,19 +268,41 @@ func flowContentEqual(a, b *entity.FlowInfo) bool {
 	return bytes.Equal(ab, bb)
 }
 
-// execute 执行工作流（首次执行）
+// execute 执行工作流（首次执行；同会话+同工作流最近一次执行为失败状态时复用该记录重新执行，不新建数据）
 func execute(ctx context.Context, conn *wsCommon.WsConnection, req *sessionDto.WebSocketExecWorkflowReq) (id int64, err error) {
 	var nodeGroupId = uuid.NewString()
-	id, err = sessionDao.ExecWorkflowDao.Insert(ctx, &sessionDto.CreateWorkflowReq{
-		SessionId:     conn.SessionId,
-		FlowId:        req.FlowId,
-		NodeGroupId:   nodeGroupId,
-		Status:        flow.FlowExecutionStatusRunning.Code(),
-		RequestParams: req.FlowContent,
-	})
-	if err != nil {
-		return
+
+	// 复用失败记录：查询会话+工作流最近一次执行，若为失败状态则复用同一条记录（更新状态+节点组+本次请求参数），
+	// 全新执行（forceNewRun，参数取本次请求），避免重跑新建数据；查询出错按无记录处理走新建
+	lastExec, qErr := sessionDao.ExecWorkflowDao.GetLatestBySessionAndFlow(ctx, conn.SessionId, req.FlowId)
+	if qErr != nil {
+		glog.Errorf(ctx, "查询最近工作流执行记录失败: %v", qErr)
+		lastExec = nil
 	}
+	if lastExec != nil && *lastExec.Status == *flow.FlowExecutionStatusFailed.Code() {
+		id = lastExec.Id
+		_, err = sessionDao.ExecWorkflowDao.Update(ctx, &sessionDto.UpdateWorkflowReq{
+			Id:            id,
+			NodeGroupId:   nodeGroupId,
+			Status:        flow.FlowExecutionStatusRunning.Code(),
+			RequestParams: req.FlowContent,
+		})
+		if err != nil {
+			return
+		}
+	} else {
+		id, err = sessionDao.ExecWorkflowDao.Insert(ctx, &sessionDto.CreateWorkflowReq{
+			SessionId:     conn.SessionId,
+			FlowId:        req.FlowId,
+			NodeGroupId:   nodeGroupId,
+			Status:        flow.FlowExecutionStatusRunning.Code(),
+			RequestParams: req.FlowContent,
+		})
+		if err != nil {
+			return
+		}
+	}
+
 	_ = writeJSON(conn, &wsCommon.WsPushMsg{Type: "round_start", Message: "运行开始", Data: map[string]interface{}{
 		"id": id,
 	}})