diff --git a/src/pages/chat/components/ChatInput.tsx b/src/pages/chat/components/ChatInput.tsx
index a1cf3bd..43b7f1e 100644
--- a/src/pages/chat/components/ChatInput.tsx
+++ b/src/pages/chat/components/ChatInput.tsx
@@ -60,14 +60,25 @@ export default function ChatInput(props: {
     const textBeforeCursor = value.slice(0, cursorPos);
     const atIndex = textBeforeCursor.lastIndexOf('@');
     
+    console.log('[@mention] input change:', {
+      value,
+      cursorPos,
+      textBeforeCursor,
+      atIndex,
+      agentListLength: agentList.length,
+      agentList: agentList.map(a => ({ id: a.id, name: a.name }))
+    });
+    
     if (atIndex !== -1 && (atIndex === 0 || /\s$/.test(textBeforeCursor.slice(0, atIndex)))) {
       const query = textBeforeCursor.slice(atIndex + 1);
+      console.log('[@mention] matched @ at position:', { atIndex, query });
       if (!query.includes(' ')) {
         setMentionQuery(query);
         // 计算位置
         const textarea = e.target;
         const rect = textarea.getBoundingClientRect();
         setMentionPos({ top: rect.bottom, left: rect.left + 10 });
+        console.log('[@mention] show popover:', { top: rect.bottom, left: rect.left + 10, query });
         setShowMentionPopover(true);
         return;
       }
@@ -78,6 +89,8 @@ export default function ChatInput(props: {
   const filteredAgents = agentList.filter(a => 
     a.name.toLowerCase().includes(mentionQuery.toLowerCase())
   );
+  
+  console.log('[@mention] filtered:', { mentionQuery, count: filteredAgents.length, agents: filteredAgents.map(a => a.name) });
 
   const handleSelectAgent = (agent: Agent) => {
     const textarea = inputRef.current;