diff --git a/components/canvas/CanvasChatPanel.tsx b/components/canvas/CanvasChatPanel.tsx
index 2dc5fe4..1ab713b 100644
--- a/components/canvas/CanvasChatPanel.tsx
+++ b/components/canvas/CanvasChatPanel.tsx
@@ -121,7 +121,42 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     n => selectedNodeIds.includes(n.id) && n.type === 'image' && (n.data as any)?.src
   );
   
-  // 当选中画布中的图片时，自动添加到附件
+  // 🆕 辅助函数：在 contenteditable 中插入图片标签
+  const insertImageTagInEditor = useCallback((url: string, name: string, index: number) => {
+    const editableDiv = textareaRef.current as HTMLDivElement | null;
+    if (!editableDiv || !editableDiv.isContentEditable) return;
+    
+    // 检查是否已存在该 URL 的标签
+    const existing = editableDiv.querySelector(`[data-attachment-url="${url}"]`);
+    if (existing) return;
+    
+    const tagSpan = document.createElement('span');
+    tagSpan.contentEditable = 'false';
+    tagSpan.setAttribute('data-attachment-index', String(index));
+    tagSpan.setAttribute('data-attachment-url', url);
+    tagSpan.className = 'inline-flex items-center gap-1 bg-muted/60 hover:bg-muted rounded-full pl-1 pr-2 py-0.5 mx-0.5 align-middle cursor-default select-none';
+    const shortName = name.length > 10 ? name.substring(0, 8) + '...' : name;
+    tagSpan.innerHTML = `
+      <img src="${url}" alt="" class="h-5 w-5 object-cover rounded-full border border-border/50" />
+      <span class="text-xs text-foreground/80">${shortName}</span>
+    `;
+    
+    // 在光标位置插入，或添加到末尾
+    const selection = window.getSelection();
+    if (selection && selection.rangeCount > 0 && editableDiv.contains(selection.anchorNode)) {
+      const range = selection.getRangeAt(0);
+      range.deleteContents();
+      range.insertNode(tagSpan);
+      range.setStartAfter(tagSpan);
+      range.setEndAfter(tagSpan);
+      selection.removeAllRanges();
+      selection.addRange(range);
+    } else {
+      editableDiv.appendChild(tagSpan);
+    }
+  }, []);
+
+  // 当选中画布中的图片时，自动添加到附件并插入标签
   useEffect(() => {
     if (selectedImageNodes.length > 0) {
       const newAttachments: Attachment[] = selectedImageNodes.map(node => {
@@ -138,12 +173,16 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
         const existingUrls = new Set(prev.map(a => a.url));
         const toAdd = newAttachments.filter(a => !existingUrls.has(a.url));
         if (toAdd.length > 0) {
+          // 插入图片标签到编辑器
+          toAdd.forEach((att, i) => {
+            insertImageTagInEditor(att.url, att.name, prev.length + i);
+          });
           return [...prev, ...toAdd];
         }
         return prev;
       });
     }
-  }, [selectedImageNodes.length, selectedNodeIds]);
+  }, [selectedImageNodes.length, selectedNodeIds, insertImageTagInEditor]);
   
   // 获取模型列表
   const { data: modelsData } = useSWR<{
@@ -534,12 +573,20 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
           firstImageUrl = imageUrl;
         }
         
-        // 添加到附件列表
-        setAttachments(prev => [...prev, {
-          url: imageUrl,
-          name: file.name,
-          contentType: file.type,
-        }]);
+        // 添加到附件列表并在编辑器中插入标签
+        setAttachments(prev => {
+          const newIndex = prev.length;
+          // 在编辑器中插入图片标签
+          setTimeout(() => {
+            insertImageTagInEditor(imageUrl, file.name, newIndex);
+            (textareaRef.current as HTMLDivElement | null)?.focus();
+          }, 0);
+          return [...prev, {
+            url: imageUrl,
+            name: file.name,
+            contentType: file.type,
+          }];
+        });
         
         // 立即将图片添加到画布
         const existingNodes = nodes.length;
@@ -877,52 +924,59 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
         </div>
       </ScrollArea>
       
-      {/* 底部输入区域 - Redesigned */}
+      {/* 底部输入区域 - 混合输入（图片标签+文字可自由混合） */}
       <div className="p-4 bg-background/80 backdrop-blur-md border-t">
         <div className="relative bg-card rounded-3xl border transition-all duration-200 focus-within:border-primary/50 focus-within:bg-background">
-          {/* 混合输入区域：使用 contenteditable 实现图片标签和文字混合 */}
-          <div className="relative px-4 pt-3 pb-12 min-h-[80px]">
-            {/* 图片标签显示在输入框上方 */}
-            {attachments.length > 0 && (
-              <div className="flex flex-wrap gap-2 mb-2">
-                {attachments.map((att, index) => (
-                  <div 
-                    key={index} 
-                    className="inline-flex items-center gap-1.5 bg-muted/60 hover:bg-muted rounded-full pl-1 pr-2 py-1 shrink-0 transition-colors"
-                  >
-                    <img
-                      src={att.url}
-                      alt=""
-                      className="h-6 w-6 object-cover rounded-full border border-border/50"
-                    />
-                    <span className="text-xs text-foreground/80 max-w-[100px] truncate">
-                      {att.name || 'Image'}
-                    </span>
-                    <button
-                      className="h-4 w-4 flex items-center justify-center rounded-full text-muted-foreground hover:text-destructive hover:bg-destructive/10 transition-colors"
-                      onClick={() => removeAttachment(index)}
-                    >
-                      <X className="h-3 w-3" />
-                    </button>
-                  </div>
-                ))}
-              </div>
-            )}
-            
-            {/* 文本输入 */}
-            <Textarea
-              ref={textareaRef}
-              value={input}
-              onChange={(e) => setInput(e.target.value)}
+          {/* 混合输入区域：使用 contenteditable 实现真正的混合编辑 */}
+          <div className="relative px-4 pt-3 pb-12 min-h-[60px]">
+            <div
+              ref={textareaRef as any}
+              contentEditable={!isLoading}
+              suppressContentEditableWarning
+              className="min-h-[40px] max-h-[120px] overflow-y-auto text-sm outline-none empty:before:content-[attr(data-placeholder)] empty:before:text-muted-foreground/50"
+              data-placeholder="请输入你的设计需求，例如：绿色椅子 替换 Image"
+              onInput={(e) => {
+                // 从 contenteditable 中提取纯文本（排除图片标签的 data-url）
+                const target = e.target as HTMLDivElement;
+                // 获取所有文本节点的内容
+                let textContent = '';
+                const walker = document.createTreeWalker(target, NodeFilter.SHOW_TEXT, null);
+                let node;
+                while (node = walker.nextNode()) {
+                  textContent += node.textContent;
+                }
+                setInput(textContent.trim());
+              }}
               onKeyDown={(e) => {
                 if (e.key === 'Enter' && !e.shiftKey) {
                   e.preventDefault();
                   handleSend();
                 }
+                // 处理 Backspace 删除图片标签
+                if (e.key === 'Backspace') {
+                  const selection = window.getSelection();
+                  if (selection && selection.rangeCount > 0) {
+                    const range = selection.getRangeAt(0);
+                    if (range.collapsed && range.startOffset === 0) {
+                      // 检查前一个兄弟节点是否是图片标签
+                      const prevSibling = range.startContainer.previousSibling as HTMLElement;
+                      if (prevSibling && prevSibling.getAttribute?.('data-attachment-index')) {
+                        e.preventDefault();
+                        const index = parseInt(prevSibling.getAttribute('data-attachment-index') || '0');
+                        removeAttachment(index);
+                        prevSibling.remove();
+                      }
+                    }
+                  }
+                }
               }}
-              placeholder="请输入你的设计需求，例如：把椅子颜色改成红色"
-              className="min-h-[40px] max-h-[100px] w-full text-sm resize-none bg-transparent border-none focus-visible:ring-0 p-0 placeholder:text-muted-foreground/50"
-              disabled={isLoading}
+              onPaste={(e) => {
+                // 只粘贴纯文本
+                e.preventDefault();
+                const text = e.clipboardData.getData('text/plain');
+                document.execCommand('insertText', false, text);
+              }}
+              style={{ whiteSpace: 'pre-wrap', wordBreak: 'break-word' }}
             />
           </div>