diff --git a/src/views/home/components/InputBar.vue b/src/views/home/components/InputBar.vue
index fc3d353..00defdd 100644
--- a/src/views/home/components/InputBar.vue
+++ b/src/views/home/components/InputBar.vue
@@ -39,7 +39,7 @@
 
 				<div class="toolbar-right">
 					<span class="hint-text">Shift+Enter 换行</span>
-					<button class="send-btn" :disabled="selectedWorkflowId === null" @click="handleSend">
+					<button class="send-btn" :disabled="selectedWorkflowId === null || sendDisabled" @click="handleSend">
 						<el-icon><Top /></el-icon>
 					</button>
 				</div>
@@ -68,6 +68,10 @@ import { Top, MagicStick, Promotion, Close, Paperclip } from '@element-plus/icon
 import { ElMessage } from 'element-plus';
 import { getWorkflowList } from '/@/api/settings/creation';
 
+interface Props {
+	sendDisabled?: boolean;
+}
+
 interface Emits {
 	(e: 'send', message: string): void;
 	(e: 'workflow-select', workflowId: string | null): void;
@@ -79,6 +83,9 @@ interface Workflow {
 	prefix: string;
 }
 
+const props = withDefaults(defineProps<Props>(), {
+	sendDisabled: false,
+});
 const emit = defineEmits<Emits>();
 const message = ref('');
 const isFocused = ref(false);
@@ -100,12 +107,11 @@ const fetchWorkflows = async () => {
 };
 
 const handleSend = () => {
-	if (selectedWorkflowId.value === null) return;
+	if (selectedWorkflowId.value === null || props.sendDisabled) return;
 	const msg = message.value.trim();
 	emit('send', msg || '');
 	message.value = '';
-	selectedWorkflowId.value = null;
-	emit('workflow-select', null);
+	// 不清除工作流选择，保持表单可见
 };
 
 const handleAttachment = () => {
diff --git a/src/views/home/components/Sidebar.vue b/src/views/home/components/Sidebar.vue
index e7b3484..53fb0b5 100644
--- a/src/views/home/components/Sidebar.vue
+++ b/src/views/home/components/Sidebar.vue
@@ -89,13 +89,12 @@ interface TreeNode {
 	nodeType: string;
 	children?: TreeNode[];
 	fileUrl?: string;
-	workflowId?: number | string;
 	fileType?: string;
-	sessionId?: string;
 }
 
 interface HistoryItem {
 	id: string;
+	sessionId: string;
 	title: string;
 	time: string;
 	status?: 'idle' | 'executing' | 'completed' | 'failed';
diff --git a/src/views/home/index.vue b/src/views/home/index.vue
index 8c68b37..dfa20bb 100644
--- a/src/views/home/index.vue
+++ b/src/views/home/index.vue
@@ -24,7 +24,7 @@
 				:active-history-id="activeHistoryId"
 				@close-workflow="handleCloseWorkflow"
 			/>
-			<InputBar ref="inputBarRef" @send="handleSend" @workflow-select="handleWorkflowSelect" />
+			<InputBar ref="inputBarRef" :send-disabled="!!(activeHistoryId && sendingSessions[activeHistoryId])" @send="handleSend" @workflow-select="handleWorkflowSelect" />
 		</div>
 
 		<!-- 预览弹窗 -->
@@ -46,7 +46,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue';
+import { ref, reactive, onMounted } from 'vue';
 import { ElMessage, ElMessageBox } from 'element-plus';
 import Sidebar from './components/Sidebar.vue';
 import MainContent from './components/MainContent.vue';
@@ -264,7 +264,7 @@ const mainContentRef = ref<any>(null);
 const workspacePage = ref(1);
 const hasMoreWorkspace = ref(true);
 const workspaceLoading = ref(false);
-const isSending = ref(false);
+const sendingSessions = reactive<Record<string, boolean>>({});
 const inputBarRef = ref<any>(null);
 
 const getSessionId = () => {
@@ -326,28 +326,41 @@ const addMessage = (msg: ChatMessage) => {
 };
 
 const handleSend = async (message: string) => {
-	if (isSending.value) return;
-	isSending.value = true;
+	// 无活跃会话时自动创建
+	if (!activeHistoryId.value) {
+		const newId = `virtual_${Date.now()}_${Math.random().toString(36).slice(2, 11)}`;
+		historyList.value.unshift({
+			id: newId,
+			sessionId: newId,
+			title: '新会话 ' + (historyList.value.length + 1),
+			time: '刚刚',
+		});
+		activeHistoryId.value = newId;
+		sessionMessages.value.set(newId, []);
+	}
+	const sid = activeHistoryId.value;
+	if (sendingSessions[sid]) return;
+	sendingSessions[sid] = true;
 	if (!selectedWorkflowDetail.value) {
 		ElMessage.warning('请先选择一个工作流');
-		isSending.value = false;
+		delete sendingSessions[sid];
 		return;
 	}
 	const mc = mainContentRef.value;
 	if (!mc) {
-		isSending.value = false;
+		delete sendingSessions[sid];
 		return;
 	}
 
 	if (!mc.validateFormFields()) {
-		isSending.value = false;
+		delete sendingSessions[sid];
 		return;
 	}
 
 	// 获取当前会话的 sessionId
-	const curSession = historyList.value.find((h) => h.id === activeHistoryId.value);
+	const curSession = historyList.value.find((h) => h.id === sid);
 	if (!curSession) {
-		isSending.value = false;
+		delete sendingSessions[sid];
 		return;
 	}
 
@@ -426,9 +439,8 @@ const handleSend = async (message: string) => {
 
 		// 5. 执行
 		await executeFlow(params);
-		// 标记完成
-		const doneSession = historyList.value.find((h) => h.id === activeHistoryId.value);
-		if (doneSession) doneSession.status = 'completed';
+		// 标记完成（直接用 curSession 引用，避免切换会话后状态错乱）
+		curSession.status = 'completed';
 		addMessage({
 			id: 'msg-' + Date.now() + '-done',
 			content: '✅ 执行完成，可前往工作空间查看产出',
@@ -436,7 +448,9 @@ const handleSend = async (message: string) => {
 			isUser: false,
 		});
 		ElMessage.success('执行完成');
-		// 刷新工作空间树
+		// 重置分页并刷新工作空间树
+		workspacePage.value = 1;
+		hasMoreWorkspace.value = true;
 		getExecutionList({ pageSize: 5 }).then((res) => {
 			imgAddressPrefix.value = res.data?.imgAddressPrefix || '';
 			treeNodes.value = buildTreeNodes(res.data?.tree || []);
@@ -457,7 +471,7 @@ const handleSend = async (message: string) => {
 						const msgs = sessionMessages.value.get(curSession.id);
 						sessionMessages.value.delete(curSession.id);
 						sessionMessages.value.set(match.id, msgs || []);
-						historyList.value[idx] = match;
+						historyList.value[idx] = { ...match, status: curSession.status };
 						if (activeHistoryId.value === curSession.id) {
 							activeHistoryId.value = match.id;
 						}
@@ -466,8 +480,7 @@ const handleSend = async (message: string) => {
 			});
 		}
 	} catch {
-		const failSession = historyList.value.find((h) => h.id === activeHistoryId.value);
-		if (failSession) failSession.status = 'failed';
+		curSession.status = 'failed';
 		addMessage({
 			id: 'msg-' + Date.now() + '-fail',
 			content: '❌ 执行失败，请重试或联系管理员',
@@ -475,7 +488,7 @@ const handleSend = async (message: string) => {
 			isUser: false,
 		});
 	} finally {
-		isSending.value = false;
+		delete sendingSessions[sid];
 	}
 };