diff --git a/web/src/views/history/History.vue b/web/src/views/history/History.vue
index b521ff6..e6c3775 100644
--- a/web/src/views/history/History.vue
+++ b/web/src/views/history/History.vue
@@ -62,8 +62,9 @@ let logSocket: WebSocket | null = null
 import { decompressFromBase64 } from '@/utils/decompress'
 
 const decompressedOutput = computed(() => {
-  if (!wsContent.value) return '无输出'
-  return decompressFromBase64(wsContent.value)
+  if (!wsContent.value) return ''
+  const decoded = decompressFromBase64(wsContent.value)
+  return decoded
 })
 
 async function loadLogs() {
@@ -581,9 +582,31 @@ watch(() => route.query, (newQuery) => {
               <Maximize2 class="h-3.5 w-3.5" />
             </Button>
           </div>
-          <div class="flex-1 overflow-auto bg-black/5 dark:bg-white/5 min-h-[160px]">
-            <div class="p-4 text-xs font-mono whitespace-pre-wrap break-all log-pre leading-relaxed"><Ansi>{{ decompressedOutput }}</Ansi></div>
-            <div v-if="isWsLoading" class="p-4 text-sm text-muted-foreground italic">连接中...</div>
+          <div class="flex-1 overflow-auto bg-black/5 dark:bg-white/5 min-h-[240px] flex flex-col">
+            <template v-if="isWsLoading">
+              <div class="flex-1 flex flex-col items-center justify-center p-8 select-none">
+                <div class="relative w-12 h-12 mb-4">
+                  <div class="absolute inset-0 rounded-full border-2 border-primary/10"></div>
+                  <div class="absolute inset-0 rounded-full border-2 border-primary border-t-transparent animate-spin"></div>
+                </div>
+                <span class="text-sm text-muted-foreground font-medium animate-pulse">正在获取日志内容</span>
+                <p class="text-[10px] text-muted-foreground/50 mt-1.5 uppercase tracking-wider">Establishing connection...</p>
+              </div>
+            </template>
+            <template v-else-if="!decompressedOutput.trim()">
+              <div class="flex-1 flex flex-col items-center justify-center p-8 select-none">
+                <div class="w-12 h-12 rounded-2xl bg-muted/30 flex items-center justify-center mb-4 border border-muted-foreground/5">
+                  <AlertCircle class="h-6 w-6 text-muted-foreground/40" />
+                </div>
+                <span class="text-sm text-muted-foreground font-medium">无输出内容</span>
+                <p class="text-[11px] text-muted-foreground/50 mt-1">此任务执行期间未产生标准输出日志</p>
+              </div>
+            </template>
+            <template v-else>
+              <div class="p-4 text-xs font-mono whitespace-pre-wrap break-all log-pre leading-relaxed">
+                <Ansi>{{ decompressedOutput }}</Ansi>
+              </div>
+            </template>
           </div>
         </div>
       </div>
diff --git a/web/src/views/history/LogViewer.vue b/web/src/views/history/LogViewer.vue
index 8eb7dd2..e7b7d18 100644
--- a/web/src/views/history/LogViewer.vue
+++ b/web/src/views/history/LogViewer.vue
@@ -2,7 +2,7 @@
 import { ref, watch, onUnmounted, nextTick } from 'vue'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
-import { X, Search } from 'lucide-vue-next'
+import { X, Search, AlertCircle } from 'lucide-vue-next'
 import Ansi from 'ansi-to-vue3'
 
 const props = defineProps<{
@@ -111,8 +111,17 @@ onUnmounted(() => {
             </Button>
           </div>
         </div>
-        <div ref="scrollContainer" class="flex-1 overflow-auto bg-black/5 dark:bg-white/5" @scroll="handleScroll">
-          <div class="p-3 sm:p-4 text-xs font-mono whitespace-pre-wrap break-all leading-relaxed"><Ansi>{{ content }}</Ansi></div>
+        <div ref="scrollContainer" class="flex-1 overflow-auto bg-black/5 dark:bg-white/5 flex flex-col" @scroll="handleScroll">
+          <div v-if="!content.trim()" class="flex-1 flex flex-col items-center justify-center p-8 select-none text-center">
+            <div class="w-16 h-16 rounded-3xl bg-muted/20 flex items-center justify-center mb-6 border border-muted-foreground/10 mx-auto">
+              <AlertCircle class="h-8 w-8 text-muted-foreground/20" />
+            </div>
+            <span class="text-base text-muted-foreground font-semibold">未检测到输出内容</span>
+            <p class="text-xs text-muted-foreground/40 mt-2 max-w-[280px] leading-relaxed mx-auto">
+              此任务已执行完毕，但在标准输出（Stdout）和错误输出（Stderr）通道中均未捕获到任何有效数据。
+            </p>
+          </div>
+          <div v-else class="p-3 sm:p-4 text-xs font-mono whitespace-pre-wrap break-all leading-relaxed"><Ansi>{{ content }}</Ansi></div>
         </div>
       </div>
     </div>