diff --git a/src/views/AgentChat/index.js b/src/views/AgentChat/index.js
index 1f46cf6f..2593538f 100644
--- a/src/views/AgentChat/index.js
+++ b/src/views/AgentChat/index.js
@@ -700,9 +700,12 @@ const AgentChatV4 = () => {
 
   return (
     <Flex
-      h="100vh"
+      position="fixed"
+      top="80px"
+      left="0"
+      right="0"
+      bottom="0"
       bg={darkBg}
-      position="relative"
       overflow="hidden"
     >
       {/* 背景装饰 - 黄金光晕效果 */}
@@ -739,8 +742,7 @@ const AgentChatV4 = () => {
           backdropFilter="blur(20px)"
           borderRight="1px solid"
           borderColor={borderGold}
-          h="calc(100vh - 80px)"
-          mt="80px"
+          h="100%"
           display="flex"
           flexDirection="column"
           boxShadow="0 8px 32px rgba(255, 215, 0, 0.1)"
@@ -909,7 +911,7 @@ const AgentChatV4 = () => {
       </Collapse>
 
       {/* 主聊天区域 */}
-      <Flex flex="1" direction="column" h="calc(100vh - 80px)" mt="80px" position="relative">
+      <Flex flex="1" direction="column" h="100%" position="relative">
         {/* 聊天头部 */}
         <Box
           bg={glassBg}
@@ -1121,8 +1123,7 @@ const AgentChatV4 = () => {
           backdropFilter="blur(20px)"
           borderLeft="1px solid"
           borderColor={borderGold}
-          h="calc(100vh - 80px)"
-          mt="80px"
+          h="100%"
           overflowY="auto"
           boxShadow="0 -8px 32px rgba(255, 215, 0, 0.1)"
           css={{