diff --git a/src/api/event.ts b/src/api/event.ts
index d0ce188..34db91a 100644
--- a/src/api/event.ts
+++ b/src/api/event.ts
@@ -39,3 +39,8 @@ export function queryEventItemBySceneId(sceneId: string) {
   return axios.get(`${urlPrefix}/event/${sceneId}/get`);
 }
 
+// 事件管理-获取工程下可用的topic
+export function getTopicList(id: string) {
+  return axios.get(`${urlPrefix}/event/${id}/topic`);
+}
+
diff --git a/src/pages/flowEditor/components/customEdge.tsx b/src/pages/flowEditor/components/customEdge.tsx
index 3119da3..3d111d7 100644
--- a/src/pages/flowEditor/components/customEdge.tsx
+++ b/src/pages/flowEditor/components/customEdge.tsx
@@ -1,6 +1,9 @@
-import React from 'react';
+import React, { useState, useEffect, useRef } from 'react';
 import { BaseEdge, EdgeLabelRenderer, EdgeProps, getSmoothStepPath, useReactFlow } from '@xyflow/react';
 import EdgeAddNodeButton from '@/pages/flowEditor/components/edgeAddNodeButton';
+import { getTopicList } from '@/api/event';
+import { useSelector } from 'react-redux';
+import { Message } from '@arco-design/web-react';
 
 type DataDisplayEdgeData = {
   label?: string;
@@ -23,6 +26,10 @@ const DataDisplayEdge: React.FC<EdgeProps> = ({
                                                 selected,
                                                 data
                                               }) => {
+  const [options, setOptions] = useState([]);
+  const [isOpen, setIsOpen] = useState(false);
+  const [selectedValue, setSelectedValue] = useState('');
+  const dropdownRef = useRef<HTMLDivElement>(null);
   const [edgePath, labelX, labelY] = getSmoothStepPath({
     sourceX,
     sourceY,
@@ -32,6 +39,7 @@ const DataDisplayEdge: React.FC<EdgeProps> = ({
     targetPosition,
     borderRadius: 8 // 设置圆角半径
   });
+  const { info } = useSelector((state: any) => state.ideContainer);
 
   // 从数据中获取悬停状态
   const hovered = data?.hovered || false;
@@ -61,8 +69,35 @@ const DataDisplayEdge: React.FC<EdgeProps> = ({
     }));
   };
 
-  const handleDataClick = (e) => {
-    console.log('click:', e);
+  const getEventList = async () => {
+    const res: any = await getTopicList(info.id);
+    if (res.code === 200) {
+      setOptions(res.data.map(v => {
+        return { label: v.eventName, value: v.topic };
+      }));
+    }
+  };
+
+  useEffect(() => {
+    getEventList();
+  }, [displayData]);
+
+  useEffect(() => {
+    const handleClickOutside = (event: MouseEvent) => {
+      if (dropdownRef.current && !dropdownRef.current.contains(event.target as Node)) {
+        setIsOpen(false);
+      }
+    };
+
+    document.addEventListener('mousedown', handleClickOutside);
+    return () => {
+      document.removeEventListener('mousedown', handleClickOutside);
+    };
+  }, []);
+
+  const handleSelect = (option) => {
+    setSelectedValue(option.label);
+    setIsOpen(false);
   };
 
   return (
@@ -89,29 +124,60 @@ const DataDisplayEdge: React.FC<EdgeProps> = ({
           {/* 数据展示框 */}
           {displayData && Object.keys(displayData).length > 0 && (
             <div
-              onClick={(e) => handleDataClick(e)}
+              ref={dropdownRef}
               style={{
-                background: '#ffffff',
-                border: '1px solid #ddd',
+                width: 150,
+                border: isOpen ? '1px solid #1890ff' : '1px solid #d9d9d9',
                 borderRadius: 4,
-                padding: 4,
-                boxShadow: '0 2px 4px rgba(0,0,0,0.1)',
-                minWidth: 100,
-                marginBottom: 4,
-                fontSize: 12,
-                textAlign: 'center'
+                backgroundColor: '#fff',
+                position: 'relative'
               }}
             >
-              {displayData.name && (
-                <div style={{ fontWeight: 'bold', marginBottom: 2 }}>
-                  {displayData.name}
-                </div>
-              )}
-              {displayData.value !== undefined && (
-                <div>
-                  {typeof displayData.value === 'object'
-                    ? JSON.stringify(displayData.value)
-                    : String(displayData.value)}
+              <div
+                onClick={() => setIsOpen(!isOpen)}
+                style={{
+                  padding: '4px 11px',
+                  cursor: 'pointer',
+                  display: 'flex',
+                  justifyContent: 'space-between',
+                  alignItems: 'center'
+                }}
+              >
+                <span>{selectedValue || displayData.name}</span>
+                <span>{isOpen ? '▲' : '▼'}</span>
+              </div>
+
+              {isOpen && (
+                <div
+                  style={{
+                    position: 'absolute',
+                    top: '105%',
+                    left: 0,
+                    right: 0,
+                    border: '1px solid #d9d9d9',
+                    borderTop: 'none',
+                    borderRadius: '0 0 4px 4px',
+                    backgroundColor: '#fff',
+                    zIndex: 1000,
+                    maxHeight: 200,
+                    overflowY: 'auto'
+                  }}
+                >
+                  {options.map((option: { value: string; label: string }) => (
+                    <div
+                      key={option.value}
+                      onClick={() => handleSelect(option)}
+                      style={{
+                        padding: '5px 12px',
+                        cursor: 'pointer',
+                        borderBottom: '1px solid #f0f0f0'
+                      }}
+                      onMouseEnter={(e) => e.currentTarget.style.backgroundColor = '#f5f5f5'}
+                      onMouseLeave={(e) => e.currentTarget.style.backgroundColor = '#fff'}
+                    >
+                      {option.label}
+                    </div>
+                  ))}
                 </div>
               )}
             </div>