diff --git a/ui/src/components/workflow/node/ConditionNode.tsx b/ui/src/components/workflow/node/ConditionNode.tsx
index 56639692..63aa1aa1 100644
--- a/ui/src/components/workflow/node/ConditionNode.tsx
+++ b/ui/src/components/workflow/node/ConditionNode.tsx
@@ -1,9 +1,14 @@
-import { memo } from "react";
+import { memo, useRef, useState } from "react";
 import { MoreOutlined as MoreOutlinedIcon } from "@ant-design/icons";
 import { Button, Card, Popover } from "antd";
 
 import SharedNode, { type SharedNodeProps } from "./_SharedNode";
 import AddNode from "./AddNode";
+import ConditionNodeConfigForm, { ConditionNodeConfigFormInstance } from "./ConditionNodeConfigForm";
+import { WorkflowNodeConfigForCondition } from "@/domain/workflow";
+import { produce } from "immer";
+import { useWorkflowStore } from "@/stores/workflow";
+import { useZustandShallowSelector } from "@/hooks";
 
 export type ConditionNodeProps = SharedNodeProps & {
   branchId: string;
@@ -11,7 +16,37 @@ export type ConditionNodeProps = SharedNodeProps & {
 };
 
 const ConditionNode = ({ node, disabled, branchId, branchIndex }: ConditionNodeProps) => {
-  // TODO: 条件分支
+  const { updateNode } = useWorkflowStore(useZustandShallowSelector(["updateNode"]));
+
+  const [formPending, setFormPending] = useState(false);
+  const formRef = useRef<ConditionNodeConfigFormInstance>(null);
+
+  const [drawerOpen, setDrawerOpen] = useState(false);
+
+  const getFormValues = () => formRef.current!.getFieldsValue() as WorkflowNodeConfigForCondition;
+
+  const handleDrawerConfirm = async () => {
+    setFormPending(true);
+    try {
+      await formRef.current!.validateFields();
+    } catch (err) {
+      setFormPending(false);
+      throw err;
+    }
+
+    try {
+      const newValues = getFormValues();
+      const newNode = produce(node, (draft) => {
+        draft.config = {
+          ...newValues,
+        };
+        draft.validated = true;
+      });
+      await updateNode(newNode);
+    } finally {
+      setFormPending(false);
+    }
+  };
 
   return (
     <>
@@ -30,7 +65,7 @@ const ConditionNode = ({ node, disabled, branchId, branchIndex }: ConditionNodeP
         }
         placement="rightTop"
       >
-        <Card className="relative z-[1] mt-10 w-[256px] shadow-md" styles={{ body: { padding: 0 } }} hoverable>
+        <Card className="relative z-[1] mt-10 w-[256px] shadow-md" styles={{ body: { padding: 0 } }} hoverable onClick={() => setDrawerOpen(true)}>
           <div className="flex h-[48px] flex-col items-center justify-center truncate px-4 py-2">
             <SharedNode.Title
               className="focus:bg-background focus:text-foreground overflow-hidden outline-slate-200 focus:rounded-sm"
@@ -39,6 +74,17 @@ const ConditionNode = ({ node, disabled, branchId, branchIndex }: ConditionNodeP
             />
           </div>
         </Card>
+
+        <SharedNode.ConfigDrawer
+          node={node}
+          open={drawerOpen}
+          pending={formPending}
+          onConfirm={handleDrawerConfirm}
+          onOpenChange={(open) => setDrawerOpen(open)}
+          getFormValues={() => formRef.current!.getFieldsValue()}
+        >
+          <ConditionNodeConfigForm nodeId={node.id} ref={formRef} disabled={disabled} initialValues={node.config} />
+        </SharedNode.ConfigDrawer>
       </Popover>
 
       <AddNode node={node} disabled={disabled} />
@@ -47,3 +93,4 @@ const ConditionNode = ({ node, disabled, branchId, branchIndex }: ConditionNodeP
 };
 
 export default memo(ConditionNode);
+
diff --git a/ui/src/components/workflow/node/ConditionNodeConfigForm.tsx b/ui/src/components/workflow/node/ConditionNodeConfigForm.tsx
new file mode 100644
index 00000000..4eca1617
--- /dev/null
+++ b/ui/src/components/workflow/node/ConditionNodeConfigForm.tsx
@@ -0,0 +1,250 @@
+import { forwardRef, memo, useEffect, useImperativeHandle, useState } from "react";
+import { Button, Card, Form, Input, Select, Space, Radio } from "antd";
+import { PlusOutlined, DeleteOutlined } from "@ant-design/icons";
+
+import {
+  WorkflowNodeConfigForCondition,
+  Expr,
+  WorkflowNodeIOValueSelector,
+  ComparisonOperator,
+  LogicalOperator,
+  isConstExpr,
+  isVarExpr,
+  WorkflowNode,
+} from "@/domain/workflow";
+import { FormInstance } from "antd";
+import { useZustandShallowSelector } from "@/hooks";
+import { useWorkflowStore } from "@/stores/workflow";
+
+// 表单内部使用的扁平结构 - 修改后只保留必要字段
+interface ConditionItem {
+  leftSelector: WorkflowNodeIOValueSelector;
+  operator: ComparisonOperator;
+  rightValue: string;
+}
+
+type ConditionNodeConfigFormFieldValues = {
+  conditions: ConditionItem[];
+  logicalOperator: LogicalOperator;
+};
+
+export type ConditionNodeConfigFormProps = {
+  className?: string;
+  style?: React.CSSProperties;
+  disabled?: boolean;
+  initialValues?: Partial<WorkflowNodeConfigForCondition>;
+  onValuesChange?: (values: WorkflowNodeConfigForCondition) => void;
+  availableSelectors?: WorkflowNodeIOValueSelector[];
+  nodeId: string;
+};
+
+export type ConditionNodeConfigFormInstance = {
+  getFieldsValue: () => ReturnType<FormInstance<ConditionNodeConfigFormFieldValues>["getFieldsValue"]>;
+  resetFields: FormInstance<ConditionNodeConfigFormFieldValues>["resetFields"];
+  validateFields: FormInstance<ConditionNodeConfigFormFieldValues>["validateFields"];
+};
+
+// 初始表单值
+const initFormModel = (): ConditionNodeConfigFormFieldValues => {
+  return {
+    conditions: [
+      {
+        leftSelector: undefined as unknown as WorkflowNodeIOValueSelector,
+        operator: "==",
+        rightValue: "",
+      },
+    ],
+    logicalOperator: "and",
+  };
+};
+
+// 将表单值转换为表达式结构
+const formToExpression = (values: ConditionNodeConfigFormFieldValues): Expr => {
+  // 创建单个条件的表达式
+  const createComparisonExpr = (condition: ConditionItem): Expr => {
+    const left: Expr = { type: "var", selector: condition.leftSelector };
+    const right: Expr = { type: "const", value: condition.rightValue || "" };
+
+    return {
+      type: "compare",
+      op: condition.operator,
+      left,
+      right,
+    };
+  };
+
+  // 如果只有一个条件，直接返回比较表达式
+  if (values.conditions.length === 1) {
+    return createComparisonExpr(values.conditions[0]);
+  }
+
+  // 多个条件，通过逻辑运算符连接
+  let expr: Expr = createComparisonExpr(values.conditions[0]);
+
+  for (let i = 1; i < values.conditions.length; i++) {
+    expr = {
+      type: "logical",
+      op: values.logicalOperator,
+      left: expr,
+      right: createComparisonExpr(values.conditions[i]),
+    };
+  }
+
+  return expr;
+};
+
+// 递归提取表达式中的条件项
+const expressionToForm = (expr?: Expr): ConditionNodeConfigFormFieldValues => {
+  if (!expr) return initFormModel();
+
+  const conditions: ConditionItem[] = [];
+  let logicalOp: LogicalOperator = "and";
+
+  const extractComparisons = (expr: Expr): void => {
+    if (expr.type === "compare") {
+      // 确保左侧是变量，右侧是常量
+      if (isVarExpr(expr.left) && isConstExpr(expr.right)) {
+        conditions.push({
+          leftSelector: expr.left.selector,
+          operator: expr.op,
+          rightValue: String(expr.right.value),
+        });
+      }
+    } else if (expr.type === "logical") {
+      logicalOp = expr.op;
+      extractComparisons(expr.left);
+      extractComparisons(expr.right);
+    }
+  };
+
+  extractComparisons(expr);
+
+  return {
+    conditions: conditions.length > 0 ? conditions : initFormModel().conditions,
+    logicalOperator: logicalOp,
+  };
+};
+
+const ConditionNodeConfigForm = forwardRef<ConditionNodeConfigFormInstance, ConditionNodeConfigFormProps>(
+  ({ className, style, disabled, initialValues, onValuesChange, nodeId }, ref) => {
+    const { getWorkflowOuptutBeforeId } = useWorkflowStore(useZustandShallowSelector(["updateNode", "getWorkflowOuptutBeforeId"]));
+
+    const [form] = Form.useForm<ConditionNodeConfigFormFieldValues>();
+    const [formModel, setFormModel] = useState<ConditionNodeConfigFormFieldValues>(initFormModel());
+
+    const [previousNodes, setPreviousNodes] = useState<WorkflowNode[]>([]);
+    useEffect(() => {
+      const previousNodes = getWorkflowOuptutBeforeId(nodeId);
+      setPreviousNodes(previousNodes);
+    }, [nodeId]);
+
+    // 初始化表单值
+    useEffect(() => {
+      if (initialValues?.expression) {
+        const formValues = expressionToForm(initialValues.expression);
+        form.setFieldsValue(formValues);
+        setFormModel(formValues);
+      }
+    }, [form, initialValues]);
+
+    // 公开表单方法
+    useImperativeHandle(
+      ref,
+      () => ({
+        getFieldsValue: form.getFieldsValue,
+        resetFields: form.resetFields,
+        validateFields: form.validateFields,
+      }),
+      [form]
+    );
+
+    // 表单值变更处理
+    const handleFormChange = (changedValues: any, values: ConditionNodeConfigFormFieldValues) => {
+      setFormModel(values);
+
+      // 转换为表达式结构并通知父组件
+      const expression = formToExpression(values);
+      onValuesChange?.({ expression });
+    };
+
+    return (
+      <Form form={form} className={className} style={style} layout="vertical" disabled={disabled} initialValues={formModel} onValuesChange={handleFormChange}>
+        <Form.List name="conditions">
+          {(fields, { add, remove }) => (
+            <>
+              {fields.map(({ key, name, ...restField }) => (
+                <Card
+                  key={key}
+                  size="small"
+                  className="mb-3"
+                  extra={fields.length > 1 ? <Button icon={<DeleteOutlined />} danger type="text" onClick={() => remove(name)} /> : null}
+                >
+                  {/* 将三个表单项放在一行 */}
+                  <div className="flex items-center gap-2">
+                    {/* 左侧变量选择器 */}
+                    <Form.Item {...restField} name={[name, "leftSelector"]} className="mb-0 flex-1" rules={[{ required: true, message: "请选择变量" }]}>
+                      <Select placeholder="选择变量">
+                        {previousNodes.map((selector) => (
+                          <Select.Option key={selector.id} value={selector.name}>
+                            {selector.name}
+                          </Select.Option>
+                        ))}
+                      </Select>
+                    </Form.Item>
+
+                    {/* 操作符 */}
+                    <Form.Item {...restField} name={[name, "operator"]} className="mb-0 w-32" rules={[{ required: true, message: "请选择" }]}>
+                      <Select>
+                        <Select.Option value="==">等于 (==)</Select.Option>
+                        <Select.Option value="!=">不等于 (!=)</Select.Option>
+                        <Select.Option value=">">大于 (&gt;)</Select.Option>
+                        <Select.Option value=">=">大于等于 (&gt;=)</Select.Option>
+                        <Select.Option value="<">小于 (&lt;)</Select.Option>
+                        <Select.Option value="<=">小于等于 (&lt;=)</Select.Option>
+                      </Select>
+                    </Form.Item>
+
+                    {/* 右侧常量输入框 */}
+                    <Form.Item {...restField} name={[name, "rightValue"]} className="mb-0 flex-1" rules={[{ required: true, message: "请输入值" }]}>
+                      <Input placeholder="输入值" />
+                    </Form.Item>
+                  </div>
+                </Card>
+              ))}
+
+              {/* 添加条件按钮 */}
+              <Form.Item>
+                <Button
+                  type="dashed"
+                  onClick={() =>
+                    add({
+                      leftSelector: undefined as unknown as WorkflowNodeIOValueSelector,
+                      operator: "==",
+                      rightValue: "",
+                    })
+                  }
+                  block
+                  icon={<PlusOutlined />}
+                >
+                  添加条件
+                </Button>
+              </Form.Item>
+            </>
+          )}
+        </Form.List>
+
+        {formModel.conditions && formModel.conditions.length > 1 && (
+          <Form.Item name="logicalOperator" label="条件逻辑">
+            <Radio.Group buttonStyle="solid">
+              <Radio.Button value="and">满足所有条件 (AND)</Radio.Button>
+              <Radio.Button value="or">满足任一条件 (OR)</Radio.Button>
+            </Radio.Group>
+          </Form.Item>
+        )}
+      </Form>
+    );
+  }
+);
+
+export default memo(ConditionNodeConfigForm);
+
diff --git a/ui/src/domain/workflow.ts b/ui/src/domain/workflow.ts
index 06226425..762d57ab 100644
--- a/ui/src/domain/workflow.ts
+++ b/ui/src/domain/workflow.ts
@@ -165,6 +165,10 @@ export type WorkflowNodeConfigForNotify = {
   providerConfig?: Record<string, unknown>;
 };
 
+export type WorkflowNodeConfigForCondition = {
+  expression: Expr;
+};
+
 export type WorkflowNodeConfigForBranch = never;
 
 export type WorkflowNodeConfigForEnd = never;
@@ -185,6 +189,32 @@ export type WorkflowNodeIOValueSelector = {
 
 // #endregion
 
+// #region Condition expression
+
+type Value = string | number | boolean;
+
+export type ComparisonOperator = ">" | "<" | ">=" | "<=" | "==" | "!=";
+
+export type LogicalOperator = "and" | "or" | "not";
+
+export type ConstExpr = { type: "const"; value: Value };
+export type VarExpr = { type: "var"; selector: WorkflowNodeIOValueSelector };
+export type CompareExpr = { type: "compare"; op: ComparisonOperator; left: Expr; right: Expr };
+export type LogicalExpr = { type: "logical"; op: LogicalOperator; left: Expr; right: Expr };
+export type NotExpr = { type: "not"; expr: Expr };
+
+export type Expr = ConstExpr | VarExpr | CompareExpr | LogicalExpr | NotExpr;
+
+export const isConstExpr = (expr: Expr): expr is ConstExpr => {
+  return expr.type === "const";
+};
+
+export const isVarExpr = (expr: Expr): expr is VarExpr => {
+  return expr.type === "var";
+};
+
+// #endregion
+
 const isBranchLike = (node: WorkflowNode) => {
   return node.type === WorkflowNodeType.Branch || node.type === WorkflowNodeType.ExecuteResultBranch;
 };
@@ -433,7 +463,17 @@ export const removeBranch = (node: WorkflowNode, branchNodeId: string, branchInd
   });
 };
 
-export const getOutputBeforeNodeId = (root: WorkflowNode, nodeId: string, type: string): WorkflowNode[] => {
+const typeEqual = (a: WorkflowNodeIO, t: string) => {
+  if (t === "all") {
+    return true;
+  }
+  if (a.type === t) {
+    return true;
+  }
+  return false;
+};
+
+export const getOutputBeforeNodeId = (root: WorkflowNode, nodeId: string, type: string = "all"): WorkflowNode[] => {
   // 某个分支的节点，不应该能获取到相邻分支上节点的输出
   const outputs: WorkflowNode[] = [];
 
@@ -445,10 +485,10 @@ export const getOutputBeforeNodeId = (root: WorkflowNode, nodeId: string, type:
       return true;
     }
 
-    if (current.type !== WorkflowNodeType.Branch && current.outputs && current.outputs.some((io) => io.type === type)) {
+    if (current.type !== WorkflowNodeType.Branch && current.outputs && current.outputs.some((io) => typeEqual(io, type))) {
       output.push({
         ...current,
-        outputs: current.outputs.filter((io) => io.type === type),
+        outputs: current.outputs.filter((io) => typeEqual(io, type)),
       });
     }
 
@@ -501,3 +541,4 @@ export const isAllNodesValidated = (node: WorkflowNode): boolean => {
 
   return true;
 };
+
diff --git a/ui/src/stores/workflow/index.ts b/ui/src/stores/workflow/index.ts
index 8057fda5..d20fec16 100644
--- a/ui/src/stores/workflow/index.ts
+++ b/ui/src/stores/workflow/index.ts
@@ -32,7 +32,7 @@ export type WorkflowState = {
   addBranch: (branchId: string) => void;
   removeBranch: (branchId: string, index: number) => void;
 
-  getWorkflowOuptutBeforeId: (nodeId: string, type: string) => WorkflowNode[];
+  getWorkflowOuptutBeforeId: (nodeId: string, type?: string) => WorkflowNode[];
 };
 
 export const useWorkflowStore = create<WorkflowState>((set, get) => ({
@@ -243,7 +243,7 @@ export const useWorkflowStore = create<WorkflowState>((set, get) => ({
     });
   },
 
-  getWorkflowOuptutBeforeId: (nodeId: string, type: string) => {
+  getWorkflowOuptutBeforeId: (nodeId: string, type: string = "all") => {
     return getOutputBeforeNodeId(get().workflow.draft as WorkflowNode, nodeId, type);
   },
 }));