diff --git a/components/pages/style/work-flow.css b/components/pages/style/work-flow.css
index 51b343c..c39a07c 100644
--- a/components/pages/style/work-flow.css
+++ b/components/pages/style/work-flow.css
@@ -153,7 +153,7 @@
   min-height: 0;
 }
 .videoContainer-qteKNi {
-  flex: 1;
+  /* flex: 1; */
   min-height: 0;
   display: flex;
   position: relative;
diff --git a/components/pages/work-flow/media-viewer.tsx b/components/pages/work-flow/media-viewer.tsx
index 3263086..4724150 100644
--- a/components/pages/work-flow/media-viewer.tsx
+++ b/components/pages/work-flow/media-viewer.tsx
@@ -2,7 +2,7 @@
 
 import React, { useRef, useEffect, useState } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
-import { Edit3, Play, Pause, Volume2, VolumeX } from 'lucide-react';
+import { Edit3, Play, Pause, Volume2, VolumeX, Maximize, Minimize } from 'lucide-react';
 import { ProgressiveReveal, presets } from '@/components/ui/progressive-reveal';
 import { GlassIconButton } from '@/components/ui/glass-icon-button';
 
@@ -45,6 +45,10 @@ export function MediaViewer({
   // 音量控制状态
   const [isMuted, setIsMuted] = useState(false);
   const [volume, setVolume] = useState(0.8);
+  
+  // 最终视频控制状态
+  const [isFinalVideoPlaying, setIsFinalVideoPlaying] = useState(true);
+  const [isFullscreen, setIsFullscreen] = useState(false);
 
   // 音量控制函数
   const toggleMute = () => {
@@ -75,6 +79,37 @@ export function MediaViewer({
     }
   };
 
+  // 最终视频播放控制
+  const toggleFinalVideoPlay = () => {
+    if (finalVideoRef.current) {
+      if (isFinalVideoPlaying) {
+        finalVideoRef.current.pause();
+      } else {
+        finalVideoRef.current.play();
+      }
+      setIsFinalVideoPlaying(!isFinalVideoPlaying);
+    }
+  };
+
+  // 全屏控制
+  const toggleFullscreen = () => {
+    if (!document.fullscreenElement) {
+      // 进入全屏
+      if (finalVideoRef.current) {
+        finalVideoRef.current.requestFullscreen?.() ||
+        (finalVideoRef.current as any).webkitRequestFullscreen?.() ||
+        (finalVideoRef.current as any).msRequestFullscreen?.();
+        setIsFullscreen(true);
+      }
+    } else {
+      // 退出全屏
+      document.exitFullscreen?.() ||
+      (document as any).webkitExitFullscreen?.() ||
+      (document as any).msExitFullscreen?.();
+      setIsFullscreen(false);
+    }
+  };
+
   // 视频播放控制
   useEffect(() => {
     if (mainVideoRef.current) {
@@ -112,6 +147,23 @@ export function MediaViewer({
     }
   }, [volume, isMuted]);
 
+  // 监听全屏状态变化
+  useEffect(() => {
+    const handleFullscreenChange = () => {
+      setIsFullscreen(!!document.fullscreenElement);
+    };
+
+    document.addEventListener('fullscreenchange', handleFullscreenChange);
+    document.addEventListener('webkitfullscreenchange', handleFullscreenChange);
+    document.addEventListener('msfullscreenchange', handleFullscreenChange);
+
+    return () => {
+      document.removeEventListener('fullscreenchange', handleFullscreenChange);
+      document.removeEventListener('webkitfullscreenchange', handleFullscreenChange);
+      document.removeEventListener('msfullscreenchange', handleFullscreenChange);
+    };
+  }, []);
+
   // 渲染音量控制组件
   const renderVolumeControls = () => (
     <div className="flex items-center gap-2">
@@ -198,10 +250,12 @@ export function MediaViewer({
               className="w-full h-full object-cover rounded-lg"
               src={finalVideo.url}
               poster={taskSketch[currentSketchIndex]?.url}
-              autoPlay
+              autoPlay={isFinalVideoPlaying}
               loop
               playsInline
               onLoadedData={() => applyVolumeSettings(finalVideoRef.current!)}
+              onPlay={() => setIsFinalVideoPlaying(true)}
+              onPause={() => setIsFinalVideoPlaying(false)}
             />
           </motion.div>
 
@@ -250,14 +304,52 @@ export function MediaViewer({
             </div>
           </motion.div>
 
-          {/* 底部音量控制 */}
+          {/* 底部控制区域 */}
           <motion.div
-            className="absolute bottom-4 left-4 z-10 flex items-center gap-3"
+            className="absolute bottom-20 left-4 z-10 flex items-center gap-3"
             initial={{ opacity: 0, scale: 0.8 }}
             animate={{ opacity: 1, scale: 1 }}
             transition={{ delay: 1, duration: 0.6 }}
           >
+            {/* 播放/暂停按钮 */}
+            <motion.div
+              whileHover={{ scale: 1.1 }}
+              whileTap={{ scale: 0.9 }}
+              className="relative"
+            >
+              {/* 播放时的发光效果 */}
+              {isFinalVideoPlaying && (
+                <motion.div
+                  className="absolute inset-0 rounded-full blur-md"
+                  animate={{ 
+                    scale: [1, 1.2, 1],
+                    opacity: [0.5, 0.8, 0.5]
+                  }}
+                  transition={{
+                    duration: 2,
+                    repeat: Infinity,
+                    ease: "easeInOut"
+                  }}
+                />
+              )}
+              <GlassIconButton
+                icon={isFinalVideoPlaying ? Pause : Play}
+                tooltip={isFinalVideoPlaying ? "Pause video" : "Play video"}
+                onClick={toggleFinalVideoPlay}
+                size="sm"
+              />
+            </motion.div>
+            
+            {/* 音量控制 */}
             {renderVolumeControls()}
+            
+            {/* 全屏按钮 */}
+            <GlassIconButton
+              icon={isFullscreen ? Minimize : Maximize}
+              tooltip={isFullscreen ? "退出全屏" : "全屏"}
+              onClick={toggleFullscreen}
+              size="sm"
+            />
           </motion.div>
 
           {/* 完成标记 */}