diff --git a/WebApp/client/public/onebyone/renderer.js b/WebApp/client/public/onebyone/renderer.js
index f7244cc..13f571f 100644
--- a/WebApp/client/public/onebyone/renderer.js
+++ b/WebApp/client/public/onebyone/renderer.js
@@ -203,6 +203,40 @@ class UIRenderer {
             this.elements.remoteStatus.textContent = this.getStatusText(remoteUser.status);
         }
 
+        // 当远程视频关闭时显示占位符
+        if (this.elements.remoteVideoPlaceholder) {
+            const shouldShowPlaceholder = !remoteUser.mediaState.video;
+            toggleElement(this.elements.remoteVideoPlaceholder, shouldShowPlaceholder);
+
+            // 更新占位符文本内容
+            if (shouldShowPlaceholder) {
+                const placeholderContent = this.elements.remoteVideoPlaceholder.querySelector('.text-center');
+                if (placeholderContent) {
+                    const titleElement = placeholderContent.querySelector('p.text-white.text-lg.font-medium');
+                    if (titleElement) {
+                        titleElement.textContent = '对方摄像头已关闭';
+                    }
+                    const subtitleElement = placeholderContent.querySelector('p.text-sm.text-gray-400');
+                    if (subtitleElement) {
+                        subtitleElement.textContent = '对方暂时关闭了视频';
+                    }
+                }
+            } else {
+                // 恢复默认占位符文本
+                const placeholderContent = this.elements.remoteVideoPlaceholder.querySelector('.text-center');
+                if (placeholderContent) {
+                    const titleElement = placeholderContent.querySelector('p.text-white.text-lg.font-medium');
+                    if (titleElement) {
+                        titleElement.textContent = '等待对方连接...';
+                    }
+                    const subtitleElement = placeholderContent.querySelector('p.text-sm.text-gray-400');
+                    if (subtitleElement) {
+                        subtitleElement.textContent = '请确保对方已加入通话';
+                    }
+                }
+            }
+        }
+
         // 渲染说话状态
         if (this.elements.remoteSpeakingIndicator) {
             toggleElement(this.elements.remoteSpeakingIndicator, remoteUser.mediaState.isSpeaking);