diff --git a/src/components/editor/WechatEditor.tsx b/src/components/editor/WechatEditor.tsx
index 388814b..3232000 100644
--- a/src/components/editor/WechatEditor.tsx
+++ b/src/components/editor/WechatEditor.tsx
@@ -194,6 +194,7 @@ export default function WechatEditor() {
     const start = textarea.selectionStart
     const end = textarea.selectionEnd
     const selectedText = value.substring(start, end)
+    const scrollTop = textarea.scrollTop
     
     let newText = ''
     let newCursorPos = 0
@@ -216,6 +217,7 @@ export default function WechatEditor() {
 
     requestAnimationFrame(() => {
       textarea.focus()
+      textarea.scrollTop = scrollTop
       textarea.setSelectionRange(newCursorPos, newCursorPos)
     })
   }, [value, handleEditorChange])
diff --git a/src/components/editor/components/MarkdownToolbar.tsx b/src/components/editor/components/MarkdownToolbar.tsx
index fefeb29..fa5f9d4 100644
--- a/src/components/editor/components/MarkdownToolbar.tsx
+++ b/src/components/editor/components/MarkdownToolbar.tsx
@@ -152,11 +152,14 @@ export function MarkdownToolbar({ onInsert }: MarkdownToolbarProps) {
                   variant="ghost"
                   size="sm"
                   className="h-8 w-8 p-0"
-                  onClick={() => onInsert(buttonTool.text, {
-                    wrap: buttonTool.wrap,
-                    placeholder: buttonTool.placeholder,
-                    suffix: buttonTool.suffix
-                  })}
+                  onClick={(e) => {
+                    e.preventDefault()
+                    onInsert(buttonTool.text, {
+                      wrap: buttonTool.wrap,
+                      placeholder: buttonTool.placeholder,
+                      suffix: buttonTool.suffix
+                    })
+                  }}
                 >
                   {buttonTool.icon}
                 </Button>