diff --git a/src/constants.ts b/src/constants.ts
new file mode 100644
index 0000000..4ae9ca4
--- /dev/null
+++ b/src/constants.ts
@@ -0,0 +1 @@
+export const DEFAULT_MODEL_ICON = 'https://placehold.co/40x40/f3f4f6/9ca3af?text=RH';
diff --git a/src/pages/AgentEditor.tsx b/src/pages/AgentEditor.tsx
index 7b08fb4..949f3ba 100644
--- a/src/pages/AgentEditor.tsx
+++ b/src/pages/AgentEditor.tsx
@@ -3,6 +3,7 @@ import { Button, Form, Input, InputNumber, Modal, Upload, App as AntApp, List, P
 import type { UploadFile } from 'antd/es/upload/interface';
 import { useNavigate, useParams } from 'react-router-dom';
 import { Agent, AgentAPI, ImageAPI, KnowledgeStatus, SkillType, Team, TeamAPI, AiModel, ModelAPI } from '../api';
+import { DEFAULT_MODEL_ICON } from '../constants';
 import SkillEditor from '../components/SkillEditor';
 import McpPanel from '../components/McpPanel';
 import ChatPreview from '../components/ChatPreview';
@@ -491,7 +492,7 @@ export default function AgentEditor() {
                             label: (
                               <div className="flex items-center justify-between w-full py-1">
                                 <div className="flex items-center gap-2" style={{ flex: 1, minWidth: 0 }}>
-                                  <img src={m.icon} alt={m.model_name} style={{ width: 20, height: 20, objectFit: 'contain', borderRadius: 4, flexShrink: 0 }} />
+                                  <img src={m.icon || DEFAULT_MODEL_ICON} alt={m.model_name} style={{ width: 20, height: 20, objectFit: 'contain', borderRadius: 4, flexShrink: 0 }} />
                                   <span className="font-medium text-gray-800" style={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{m.model_name}</span>
                                 </div>
                                 <div className="flex flex-col items-end justify-center text-[10px] text-gray-400" style={{ flexShrink: 0, marginLeft: 8 }}>