diff --git a/src/api/settings/workflow/index.ts b/src/api/settings/workflow/index.ts
index 2d48f0e..332e9ce 100644
--- a/src/api/settings/workflow/index.ts
+++ b/src/api/settings/workflow/index.ts
@@ -1,4 +1,5 @@
 import request from '/@/utils/request';
+import type { RequestOptions } from '/@/utils/request';
 
 // ===== 节点库（V2 结构，workflow 专用；creation 继续使用 creation/index.ts 的旧结构）=====
 export interface NodeLibraryPresetOption {
@@ -134,3 +135,16 @@ export function getSubFlowWorkflowDetail(id: string) {
 		params: { id },
 	}) as Promise<{ code: number; message: string; data: any }>;
 }
+
+// 工作空间文件下载（首页工作流/工作空间专用）：与 creation 的 downloadToFile 同一后端接口，
+// 但工作空间文件可能较大（视频/音频），下载超时放宽到 5 分钟；不改动 creation 共享 API 的超时
+export function downloadWorkspaceFile(data: { fileURL: string }, requestOptions?: RequestOptions) {
+	return request({
+		url: '/oss/file/downloadToBrowser',
+		method: 'post',
+		data,
+		responseType: 'blob',
+		timeout: 5 * 60 * 1000,
+		requestOptions,
+	});
+}
diff --git a/src/views/home/components/Sidebar.vue b/src/views/home/components/Sidebar.vue
index 62f1f55..d4498e7 100644
--- a/src/views/home/components/Sidebar.vue
+++ b/src/views/home/components/Sidebar.vue
@@ -77,7 +77,13 @@
 						<span class="file-name">{{ fileNode.label }}</span>
 						<div v-if="fileNode.fileUrl" class="file-actions">
 							<button class="file-action-btn" @click.stop="handlePreviewNode(fileNode)">预览</button>
-							<button class="file-action-btn" @click.stop="handleDownloadNode(fileNode)">下载</button>
+							<button
+								class="file-action-btn"
+								:disabled="downloadingFileId === fileNode.id"
+								@click.stop="handleDownloadNode(fileNode)"
+							>
+								{{ downloadingFileId === fileNode.id ? '下载中…' : '下载' }}
+							</button>
 							<button class="file-action-btn file-action-btn--del" @click.stop="handleDeleteNode(fileNode)">删除</button>
 						</div>
 					</div>
@@ -120,6 +126,8 @@ interface Props {
 	workspaceFailed?: boolean;
 	// 工作空间是否已成功加载：懒加载成功后才不再触发；失败保持 false → 切回 tab 自动重试
 	workspaceLoaded?: boolean;
+	// 工作空间正在下载的文件 id：对应「下载」按钮显示下载中并禁用（按钮级感知，不影响其他功能）
+	downloadingFileId?: string | null;
 	treeNodes: TreeNode[];
 	treeLoading: boolean;
 }
@@ -144,6 +152,7 @@ const props = withDefaults(defineProps<Props>(), {
 	historyLoadingMore: false,
 	workspaceFailed: false,
 	workspaceLoaded: false,
+	downloadingFileId: null,
 });
 const emit = defineEmits<Emits>();
 
@@ -498,6 +507,15 @@ const handleDeleteNode = (data: TreeNode) => emit('delete-node', data);
 		background: #dbeafe;
 	}
 
+	&:disabled {
+		opacity: 0.6;
+		cursor: not-allowed;
+
+		&:hover {
+			background: transparent;
+		}
+	}
+
 	&--del {
 		color: #ef4444;
 
diff --git a/src/views/home/index.vue b/src/views/home/index.vue
index 8353cd4..4792d74 100644
--- a/src/views/home/index.vue
+++ b/src/views/home/index.vue
@@ -11,6 +11,7 @@
 			:tree-loading="treeLoading"
 			:workspace-failed="workspaceTreeFailed"
 			:workspace-loaded="workspaceTreeLoaded"
+			:downloading-file-id="downloadingFileId"
 			@menu-change="handleMenuChange"
 			@new-chat="handleCreateHistory"
 			@select-history="handleSelectHistory"
@@ -91,8 +92,9 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, onMounted, onBeforeUnmount } from 'vue';
+import { ref, reactive, computed, h, onMounted, onBeforeUnmount } from 'vue';
 import { ElMessage, ElMessageBox } from 'element-plus';
+import { Loading } from '@element-plus/icons-vue';
 import Sidebar from './components/Sidebar.vue';
 import MainContent from './components/MainContent.vue';
 import InputBar from './components/InputBar.vue';
@@ -103,11 +105,12 @@ import type { WorkflowOutput } from './utils/flowDsl';
 import { getChatModel, listModelManage } from '/@/api/settings/modelConfigV2';
 import { connectSessionSocket, sendAgentStart, sendWorkflowStart, sendCancel } from './utils/wsExecute';
 import { parseWsMessage, getDelta, getAnswer, getRecordId, getErrorText, getNodeEvent, getToolCallName, getToolResultText, type WorkflowNodeProgress } from './utils/wsMessage';
+import { getApiErrorMessage } from '/@/utils/request';
 import {
 	getWorkflowDetail,
 	deleteExecutionResult,
-	downloadToFile,
 } from '/@/api/settings/creation';
+import { downloadWorkspaceFile } from '/@/api/settings/workflow/index';
 import { getSessionListV2, getSessionResults, deleteSessionV2, deleteSessionRecord, getWorkspaceResultList, deleteWorkspaceResult } from '/@/api/settings/workflow/session';
 import type { ExecutionTreeItem, VOSessionInfoResult } from '/@/api/settings/workflow/session';
 
@@ -155,6 +158,8 @@ const activeMenu = ref('chat');
 const activeHistoryId = ref<string | null>(null);
 const treeLoading = ref(false);
 const treeNodes = ref<TreeNode[]>([]);
+// 工作空间正在下载的文件 id：按钮级下载感知，不锁页面、不影响其他功能
+const downloadingFileId = ref<string | null>(null);
 // 会话记录 / 工作空间结果树加载失败标记：失败态可区分、提供重试入口
 const sessionHistoryFailed = ref(false);
 const workspaceTreeFailed = ref(false);
@@ -238,12 +243,30 @@ const previewNode = (data: TreeNode) => {
 	previewDialogVisible.value = true;
 };
 
-// 通用文件下载：优先后端代理，兜底 a 标签
-const downloadAsset = async (url: string, name: string) => {
+// 通用文件下载：后端代理转 blob 后触发下载；文件名优先用 URL 里的原始文件名（含扩展名）
+const downloadAsset = async (url: string, label: string, fileType?: string) => {
+	// 下载感知：下载中的轻量 toast（带旋转图标、不自动关闭），不锁页面、不影响其他功能；
+	// 成功/失败时关闭并替换为结果提示
+	const downloadingMsg = ElMessage({
+		message: `正在下载${label ? ` ${label}` : ''}…`,
+		// 旋转 loading 图标：el-icon 包裹 + is-loading 触发 Element Plus 全局旋转动画
+		icon: () => h('span', { class: 'el-icon is-loading' }, [h(Loading)]),
+		duration: 0,
+		showClose: true,
+	});
 	try {
-		// 优先通过后端代理下载，避免跨域问题
-		const res = await downloadToFile({ fileURL: url });
-		const blob = res.data as Blob;
+		// 后端已调整：content 即下载接口所需对象名（相对路径，含前导斜杠），直接传递；
+		// 兼容历史完整 URL：仅去掉协议/域名，保留路径
+		const objectName = url.replace(/^https?:\/\/[^/]+/, '');
+		const r = await downloadWorkspaceFile({ fileURL: objectName }, { errorMode: 'page' });
+		const blob = r instanceof Blob ? r : r?.data;
+		// 兜底：后端 200 + JSON 错误体时 blob 不是目标文件，拒绝生成坏文件
+		if (!(blob instanceof Blob) || /json/i.test(blob.type)) throw new Error('服务返回异常，请重试');
+		const fileName = decodeURIComponent(url.split('/').pop() || '');
+		const type = String(fileType || '').toLowerCase();
+		const defaultExt = type === 'video' ? 'mp4' : type === 'audio' ? 'mp3' : type === 'text' ? 'txt' : 'html';
+		const fileExt = fileName.split('.').pop()?.toLowerCase() || defaultExt;
+		const name = fileName || `${label}.${fileExt}`;
 		const blobUrl = URL.createObjectURL(blob);
 		const a = document.createElement('a');
 		a.href = blobUrl;
@@ -252,23 +275,23 @@ const downloadAsset = async (url: string, name: string) => {
 		a.click();
 		document.body.removeChild(a);
 		URL.revokeObjectURL(blobUrl);
-	} catch {
-		// 兜底：直接用 a 标签下载
-		const full = buildAssetUrl(url);
-		const a = document.createElement('a');
-		a.href = full;
-		a.download = name;
-		a.target = '_blank';
-		a.rel = 'noopener';
-		document.body.appendChild(a);
-		a.click();
-		document.body.removeChild(a);
+		downloadingMsg.close();
+		ElMessage.success(`下载完成：${name}`);
+	} catch (e) {
+		downloadingMsg.close();
+		ElMessage.error(getApiErrorMessage(e, '下载失败'));
 	}
 };
 
 const downloadNode = async (data: TreeNode) => {
 	if (!data.fileUrl) return;
-	await downloadAsset(data.fileUrl, data.label);
+	// 工作空间下载感知：对应文件「下载」按钮显示下载中并禁用，不锁页面、不影响其他功能
+	downloadingFileId.value = data.id;
+	try {
+		await downloadAsset(data.fileUrl, data.label, data.fileType);
+	} finally {
+		downloadingFileId.value = null;
+	}
 };
 
 const handleDeleteNode = async (data: TreeNode) => {
@@ -1253,7 +1276,7 @@ const handleOutputPreview = (msg: ChatMessage, output: WorkflowOutput) => {
 
 const handleOutputDownload = async (msg: ChatMessage, output: WorkflowOutput) => {
 	if (!output.url) return;
-	await downloadAsset(output.url, output.name);
+	await downloadAsset(output.url, output.name, output.type);
 };
 
 const handleOutputDelete = async (msg: ChatMessage, output: WorkflowOutput) => {