diff --git a/api/app/core/workflow/executor.py b/api/app/core/workflow/executor.py
index d42fcf75..e3d634d8 100644
--- a/api/app/core/workflow/executor.py
+++ b/api/app/core/workflow/executor.py
@@ -14,6 +14,7 @@ from langgraph.graph.state import CompiledStateGraph
 
 from app.core.workflow.graph_builder import GraphBuilder
 from app.core.workflow.nodes import WorkflowState
+from app.core.workflow.nodes.base_config import VariableType
 from app.core.workflow.nodes.enums import NodeType
 
 # from app.core.tools.registry import ToolRegistry
@@ -78,9 +79,21 @@ class WorkflowExecutor:
                 var_name = var_def.get("name")
                 var_default = var_def.get("default")
                 if var_name:
-                    # TODO: 入参类型校验
-                    conversation_vars[var_name] = var_default
-
+                    if var_default:
+                        conversation_vars[var_name] = var_default
+                    else:
+                        var_type = var_def.get("type")
+                        match var_type:
+                            case VariableType.STRING:
+                                conversation_vars[var_name] = ""
+                            case VariableType.NUMBER:
+                                conversation_vars[var_name] = 0
+                            case VariableType.OBJECT:
+                                conversation_vars[var_name] = {}
+                            case VariableType.BOOLEAN:
+                                conversation_vars[var_name] = False
+                            case VariableType.ARRAY_NUMBER | VariableType.ARRAY_OBJECT | VariableType.ARRAY_BOOLEAN | VariableType.ARRAY_STRING:
+                                conversation_vars[var_name] = []
         input_variables = input_data.get("variables") or {}  # Start 节点的自定义变量
 
         # 构建分层的变量结构
@@ -362,7 +375,7 @@ class WorkflowExecutor:
                         inputv = payload.get("input", {})
                         variables = inputv.get("variables", {})
                         variables_sys = variables.get("sys", {})
-                        conversation_id = variables_sys.get("conversation_id")
+                        conversation_id = input_data.get("conversation_id")
                         execution_id = variables_sys.get("execution_id")
                         logger.info(f"[DEBUG] Node starts execution: {node_name}")
 
@@ -381,7 +394,7 @@ class WorkflowExecutor:
                         inputv = result.get("input", {})
                         variables = inputv.get("variables", {})
                         variables_sys = variables.get("sys", {})
-                        conversation_id = variables_sys.get("conversation_id")
+                        conversation_id = input_data.get("conversation_id")
                         execution_id = variables_sys.get("execution_id")
                         logger.info(f"[DEBUG] Node execution completed: {node_name}")
 
diff --git a/api/app/core/workflow/graph_builder.py b/api/app/core/workflow/graph_builder.py
index b24d5202..69ed3b6a 100644
--- a/api/app/core/workflow/graph_builder.py
+++ b/api/app/core/workflow/graph_builder.py
@@ -12,7 +12,6 @@ from app.core.workflow.nodes.enums import NodeType
 logger = logging.getLogger(__name__)
 
 
-# TODO: 子图拆解支持
 class GraphBuilder:
     def __init__(
             self,
diff --git a/api/app/core/workflow/nodes/assigner/node.py b/api/app/core/workflow/nodes/assigner/node.py
index 008002ed..7b9d645b 100644
--- a/api/app/core/workflow/nodes/assigner/node.py
+++ b/api/app/core/workflow/nodes/assigner/node.py
@@ -45,6 +45,7 @@ class AssignerNode(BaseNode):
 
             # Get the value or expression to assign
             value = assignment.value
+            logger.debug(f"left:{variable_selector}, right: {value}")
             pattern = r"\{\{\s*(.*?)\s*\}\}"
             if isinstance(value, str):
                 expression = re.match(pattern, value)
@@ -85,4 +86,3 @@ class AssignerNode(BaseNode):
                 case _:
                     raise ValueError(f"Invalid Operator: {assignment.operation}")
             logger.info(f"Node {self.node_id}: execution completed")
-