diff --git a/webui/src/components/Log.vue b/webui/src/components/Log.vue
index 5cb7c38..d4ce06c 100644
--- a/webui/src/components/Log.vue
+++ b/webui/src/components/Log.vue
@@ -1,14 +1,14 @@
 <template>
   <q-card class="q-mt-md shadow-2">
-    <q-card-section class="bg-blue-grey-1">
+    <q-card-section class="bg-blue-grey-1 cursor-pointer" @click="expanded = !expanded">
       <div class="text-h6 text-blue-grey-9 flex items-center gap-2">
         <q-icon name="terminal" />
         运行日志
         <q-space />
-        <q-btn flat dense round icon="delete" @click="clearLog" size="sm" />
+        <q-icon :name="expanded ? 'expand_less' : 'expand_more'" />
       </div>
     </q-card-section>
-    <q-card-section class="q-pa-none">
+    <div v-show="expanded" class="q-pa-none">
       <div ref="logContainer" class="log-container">
         <div
           v-for="(log, index) in logs"
@@ -18,8 +18,9 @@
           <span class="log-time">{{ log.time }}</span>
           <span class="log-message">{{ log.message }}</span>
         </div>
+        <div v-if="logs.length === 0" class="log-empty">暂无日志</div>
       </div>
-    </q-card-section>
+    </div>
   </q-card>
 </template>
 
@@ -38,6 +39,7 @@ interface LogEntry {
 
 const logs = ref<LogEntry[]>([])
 const logContainer = ref<HTMLElement | null>(null)
+const expanded = ref(true)
 
 const addLog = (level: LogEntry['level'], message: string) => {
   const now = new Date()
@@ -103,4 +105,10 @@ defineExpose({
 .log-debug .log-message {
   color: #9cdcfe;
 }
+
+.log-empty {
+  color: #666;
+  font-style: italic;
+  padding: 8px;
+}
 </style>
diff --git a/webui/src/components/ParameterForm.vue b/webui/src/components/ParameterForm.vue
index cfd928f..208718a 100644
--- a/webui/src/components/ParameterForm.vue
+++ b/webui/src/components/ParameterForm.vue
@@ -384,23 +384,14 @@ const calculate = async () => {
   try {
     // 调用 pywebview 的 Python 函数
     if (window.pywebview) {
-      logRef.value?.addLog('info', '开始调用后端计算...')
       const response = await window.pywebview.api.calculate(params)
-      logRef.value?.addLog('info', `后端返回 keys: ${Object.keys(response).join(', ')}`)
-      logRef.value?.addLog('info', `DEBUG_VERSION: ${response.DEBUG_VERSION || '无'}`)
-      logRef.value?.addLog('info', `后端返回: ${JSON.stringify(response).substring(0, 150)}`)
 
-      // 显示日志
-      console.log('[DEBUG] response:', response)
+      // 显示后端日志
       const logs = response.logs
       if (Array.isArray(logs) && logs.length > 0) {
-        logRef.value?.addLog('info', `收到 ${logs.length} 条日志`)
         for (const log of logs) {
           logRef.value?.addLog(log.level as any, log.message)
         }
-      } else {
-        logRef.value?.addLog('warning', '后端未返回日志')
-        logRef.value?.addLog('warning', `response.logs = ${JSON.stringify(logs)}`)
       }
 
       result.value = JSON.stringify(response, null, 2)