diff --git a/static/src/components/sidebar/ConversationSidebar.vue b/static/src/components/sidebar/ConversationSidebar.vue
index 085bd22..4f29978 100644
--- a/static/src/components/sidebar/ConversationSidebar.vue
+++ b/static/src/components/sidebar/ConversationSidebar.vue
@@ -61,8 +61,8 @@
           <span class="btn-icon">+</span>
           <span class="btn-text">新建对话</span>
         </button>
-        <button v-if="showCollapseButton" class="toggle-sidebar-btn" @click="$emit('toggle')">
-          <template v-if="collapseButtonVariant === 'toggle'">
+        <button v-if="resolvedShowCollapseButton" class="toggle-sidebar-btn" @click="$emit('toggle')">
+          <template v-if="resolvedCollapseButtonVariant === 'toggle'">
             <span v-if="collapsed" class="icon icon-md" :style="iconStyle('menu')" aria-hidden="true"></span>
             <span v-else class="toggle-arrow" aria-hidden="true">←</span>
           </template>
@@ -164,12 +164,18 @@ import { useUiStore } from '@/stores/ui';
 import { useConversationStore } from '@/stores/conversation';
 import { usePersonalizationStore } from '@/stores/personalization';
 
-const props = defineProps<{
+const props = withDefaults(
+  defineProps<{
   formatTime?: (input: unknown) => string;
   iconStyle?: (key: string) => Record<string, string>;
   showCollapseButton?: boolean;
   collapseButtonVariant?: 'toggle' | 'close';
-}>();
+  }>(),
+  {
+    showCollapseButton: true,
+    collapseButtonVariant: 'toggle'
+  }
+);
 
 defineEmits<{
   (event: 'toggle'): void;
@@ -199,6 +205,6 @@ const { visible: personalPageVisible } = storeToRefs(personalizationStore);
 
 const formatTime = (value: unknown) => (props.formatTime ? props.formatTime(value) : String(value));
 const iconStyle = (key: string) => (props.iconStyle ? props.iconStyle(key) : {});
-const showCollapseButton = computed(() => props.showCollapseButton !== false);
-const collapseButtonVariant = computed(() => props.collapseButtonVariant || 'toggle');
+const resolvedShowCollapseButton = computed(() => props.showCollapseButton);
+const resolvedCollapseButtonVariant = computed(() => props.collapseButtonVariant);
 </script>