diff --git a/api/core/workflow/entities/workflow_runtime_state_entities.py b/api/core/workflow/entities/workflow_runtime_state_entities.py
new file mode 100644
index 0000000000..6b55d843e3
--- /dev/null
+++ b/api/core/workflow/entities/workflow_runtime_state_entities.py
@@ -0,0 +1,66 @@
+from enum import Enum
+from typing import Optional
+
+from pydantic import BaseModel
+
+from core.app.entities.app_invoke_entities import InvokeFrom
+from core.workflow.entities.node_entities import NodeRunResult
+from core.workflow.entities.variable_pool import VariablePool
+from core.workflow.graph import Graph, GraphNode
+from core.workflow.nodes.base_node import BaseNode, UserFrom
+from models.workflow import WorkflowType
+
+
+class RuntimeNode(BaseModel):
+    class Status(Enum):
+        RUNNING = "running"
+        SUCCESS = "success"
+        FAILED = "failed"
+        PAUSED = "paused"
+
+    id: str
+    """random id for current runtime node"""
+
+    graph_node: GraphNode
+    """graph node"""
+
+    node_instance: BaseNode
+    """node instance"""
+
+    node_run_result: Optional[NodeRunResult] = None
+    """node run result"""
+
+    status: Status = Status.RUNNING
+    """node status"""
+
+    start_at: float
+    """start time"""
+
+    paused_at: Optional[float] = None
+    """paused time"""
+
+    finished_at: Optional[float] = None
+    """finished time"""
+
+    failed_reason: Optional[str] = None
+    """failed reason"""
+
+    paused_by: Optional[str] = None
+    """paused by"""
+
+
+class WorkflowRuntimeState(BaseModel):
+    tenant_id: str
+    app_id: str
+    workflow_id: str
+    workflow_type: WorkflowType
+    user_id: str
+    user_from: UserFrom
+    variable_pool: VariablePool
+    invoke_from: InvokeFrom
+    graph: Graph
+    call_depth: int
+    start_at: float
+
+    total_tokens: int = 0
+    node_run_steps: int = 0
diff --git a/api/core/workflow/graph.py b/api/core/workflow/graph.py
index 10931c0be4..06e739b31a 100644
--- a/api/core/workflow/graph.py
+++ b/api/core/workflow/graph.py
@@ -29,14 +29,14 @@ class GraphNode(BaseModel):
     target_edge_config: Optional[dict] = None
     """original target edge config"""
 
-    sub_graph: Optional["Graph"] = None
-    """sub graph for iteration or loop node"""
-
     def add_child(self, node_id: str) -> None:
         self.children_node_ids.append(node_id)
 
 
 class Graph(BaseModel):
+    graph: dict
+    """graph from workflow"""
+
     graph_nodes: dict[str, GraphNode] = {}
     """graph nodes"""
 
@@ -46,7 +46,6 @@ class Graph(BaseModel):
     def add_edge(self, edge_config: dict,
                  source_node_config: dict,
                  target_node_config: dict,
-                 source_node_sub_graph: Optional["Graph"] = None,
                  is_continue_callback: Optional[Callable] = None) -> None:
         """
         Add edge to the graph
@@ -54,7 +53,6 @@ class Graph(BaseModel):
         :param edge_config: edge config
         :param source_node_config: source node config
         :param target_node_config: target node config
-        :param source_node_sub_graph: sub graph for iteration or loop node
         :param is_continue_callback: condition callback
         """
         source_node_id = source_node_config.get('id')
@@ -71,7 +69,6 @@ class Graph(BaseModel):
                 node_config=source_node_config,
                 children_node_ids=[target_node_id],
                 target_edge_config=edge_config,
-                sub_graph=source_node_sub_graph
             )
 
             self.add_graph_node(source_graph_node)
@@ -79,7 +76,6 @@ class Graph(BaseModel):
             source_node = self.graph_nodes[source_node_id]
             source_node.add_child(target_node_id)
             source_node.target_edge_config = edge_config
-            source_node.sub_graph = source_node_sub_graph
 
         source_handle = None
         if edge_config.get('sourceHandle'):