diff --git a/src/pages/ai/components/AiConversationList.vue b/src/pages/ai/components/AiConversationList.vue
index 6fc937f..e47e95d 100644
--- a/src/pages/ai/components/AiConversationList.vue
+++ b/src/pages/ai/components/AiConversationList.vue
@@ -1,5 +1,11 @@
 <template>
-	<t-popup v-model="popupVisible" placement="right" destroy-on-close>
+	<t-popup
+		v-model="popupVisible"
+		placement="right"
+		destroy-on-close
+		:z-index="popupZIndex"
+		:overlay-props="{ zIndex: popupZIndex - 1 }"
+	>
 		<section class="ai-conversation-list" @scroll="handleScroll">
 			<header class="header glass-white">
 				<h3>历史会话</h3>
@@ -98,6 +104,8 @@ const emit = defineEmits<{
 	delete: [conversationId: string];
 }>();
 
+const popupZIndex = 4000;
+const deleteDialogZIndex = 12000;
 const pageSize = 20;
 const popupVisible = computed({
 	get() {
@@ -203,6 +211,8 @@ async function confirmDelete(conversation: GaoAiConversation): Promise<void> {
 		content: "确定删除这段历史会话吗？删除后无法恢复。",
 		cancelBtn: "取消",
 		confirmBtn: "删除",
+		zIndex: deleteDialogZIndex,
+		overlayProps: { zIndex: deleteDialogZIndex },
 		onCancel() {
 			dialog.destroy();
 		},
@@ -288,6 +298,7 @@ watch(() => props.sessionKey, async () => {
 	}
 
 	.items {
+		flex: 1;
 
 		.item {