diff --git a/src/ChatItem/index.tsx b/src/ChatItem/index.tsx
index 01ff209..eac8068 100644
--- a/src/ChatItem/index.tsx
+++ b/src/ChatItem/index.tsx
@@ -37,6 +37,7 @@ const ChatItem = memo<ChatItemProps>((props) => {
     errorMessage,
     chatItemRenderConfig,
     onDoubleClick,
+    originData = {},
     ...restProps
   } = props;
   const { mobile } = useResponsive();
@@ -55,7 +56,7 @@ const ChatItem = memo<ChatItemProps>((props) => {
     const dom = (
       <Avatar
         addon={avatarAddon}
-        avatar={avatar}
+        avatar={originData.avatar}
         loading={loading}
         onClick={onAvatarClick}
         placement={placement}
@@ -63,7 +64,7 @@ const ChatItem = memo<ChatItemProps>((props) => {
       />
     );
     return chatItemRenderConfig?.avatarRender?.(props, dom) || dom;
-  }, [avatar, placement, mobile, loading]);
+  }, [originData.avatar, placement, mobile, loading]);
 
   const messageContentDom = useMemo(() => {
     if (chatItemRenderConfig?.contentRender === false) return null;
diff --git a/src/ProChat/container/index.tsx b/src/ProChat/container/index.tsx
index 64c9d4e..a76527f 100644
--- a/src/ProChat/container/index.tsx
+++ b/src/ProChat/container/index.tsx
@@ -15,6 +15,7 @@ export interface ProChatProps<T extends Record<string, any>> extends ChatProps<T
   style?: CSSProperties;
   className?: string;
   chatRef?: ProChatChatReference;
+  appStyle?: CSSProperties;
 }
 
 export function ProChat<T extends Record<string, any> = Record<string, any>>({
@@ -24,11 +25,19 @@ export function ProChat<T extends Record<string, any> = Record<string, any>>({
   style,
   className,
   chatItemRenderConfig,
+  appStyle,
   ...props
 }: ProChatProps<T>) {
   return (
     <ProChatProvider {...props} devtoolOptions={__PRO_CHAT_STORE_DEVTOOLS__}>
-      <Container>
+      <Container
+        style={{
+          height: '100%',
+          width: '100%',
+          ...appStyle,
+        }}
+        className={className}
+      >
         <App
           chatItemRenderConfig={chatItemRenderConfig}
           chatInput={renderInput}