diff --git a/packages/chili-core/src/base/pubsub.ts b/packages/chili-core/src/base/pubsub.ts
index b4f72efe..769532fb 100644
--- a/packages/chili-core/src/base/pubsub.ts
+++ b/packages/chili-core/src/base/pubsub.ts
@@ -34,8 +34,9 @@ export interface PubSubEventMap {
     clearSelectionControl: () => void;
     openCommandContext: (command: ICommand) => void;
     closeCommandContext: () => void;
-    showHome: () => void;
+    displayHome: (show: boolean) => void;
     showToast: (message: I18nKeys, ...args: any[]) => void;
+    showPermanent: (action: () => Promise<void>, message: I18nKeys, ...args: any[]) => void;
     showDialog: (title: I18nKeys, context: IPropertyChanged, callback: () => void) => void;
 }
 
diff --git a/packages/chili-core/src/i18n/en.ts b/packages/chili-core/src/i18n/en.ts
index 25bf7813..504fb8c2 100644
--- a/packages/chili-core/src/i18n/en.ts
+++ b/packages/chili-core/src/i18n/en.ts
@@ -94,6 +94,7 @@ export default {
         "toast.downloading": "Downloading",
         "toast.success": "Success",
         "toast.fail": "Fail",
+        "toast.excuting{0}": "Excuting {0}",
         "prompt.default":
             "Middle mouse button to pan the view, Shift + Middle button to rotate the view, Middle button to scroll the zoom view",
         "prompt.select.models": "Please select models",
diff --git a/packages/chili-core/src/i18n/local.ts b/packages/chili-core/src/i18n/local.ts
index 52de32e3..eb6a07ff 100644
--- a/packages/chili-core/src/i18n/local.ts
+++ b/packages/chili-core/src/i18n/local.ts
@@ -130,6 +130,7 @@ export type I18nKeys =
     | "toast.downloading"
     | "toast.success"
     | "toast.fail"
+    | "toast.excuting{0}"
     | "prompt.default"
     | "prompt.select.models"
     | "prompt.select.edges"
diff --git a/packages/chili-core/src/i18n/zh-cn.ts b/packages/chili-core/src/i18n/zh-cn.ts
index 59816951..171e570e 100644
--- a/packages/chili-core/src/i18n/zh-cn.ts
+++ b/packages/chili-core/src/i18n/zh-cn.ts
@@ -94,6 +94,7 @@ export default {
         "toast.downloading": "正在下载",
         "toast.success": "成功",
         "toast.fail": "失败",
+        "toast.excuting{0}": "正在执行{0}",
         "prompt.default": "鼠标中键平移视图，Shift + 中键旋转视图，中键滚动缩放视图",
         "prompt.polygon.close": "闭合",
         "prompt.select.models": "请选择模型",
diff --git a/packages/chili-ui/src/home/home.ts b/packages/chili-ui/src/home/home.ts
index 70f25bc6..6a4e73de 100644
--- a/packages/chili-ui/src/home/home.ts
+++ b/packages/chili-ui/src/home/home.ts
@@ -54,9 +54,20 @@ export const Home = async (app: IApplication) => {
                     div(
                         {
                             className: style.document,
-                            onclick: async () => {
-                                let document = await app.openDocument(item.id);
-                                document?.visual.viewer.activeView?.cameraController.fitContent();
+                            onclick: () => {
+                                if (item.id === app.activeDocument?.id) {
+                                    PubSub.default.pub("displayHome", false);
+                                } else {
+                                    PubSub.default.pub(
+                                        "showPermanent",
+                                        async () => {
+                                            let document = await app.openDocument(item.id);
+                                            document?.visual.viewer.activeView?.cameraController.fitContent();
+                                        },
+                                        "toast.excuting{0}",
+                                        I18n.translate("command.document.open"),
+                                    );
+                                }
                             },
                         },
                         img({ className: style.img, src: item.image }),
diff --git a/packages/chili-ui/src/mainWindow.ts b/packages/chili-ui/src/mainWindow.ts
index fb11d2e8..eeada775 100644
--- a/packages/chili-ui/src/mainWindow.ts
+++ b/packages/chili-ui/src/mainWindow.ts
@@ -5,6 +5,7 @@ import { Dialog } from "./dialog";
 import { Editor } from "./editor";
 import { Home } from "./home";
 import { Toast } from "./toast";
+import { Permanent } from "./permanent";
 
 document.oncontextmenu = (e) => e.preventDefault();
 
@@ -26,8 +27,9 @@ export class MainWindow {
         const displayHome = debounce(this.displayHome, 100);
         PubSub.default.sub("showToast", Toast.show);
         PubSub.default.sub("showDialog", Dialog.show);
+        PubSub.default.sub("showPermanent", Permanent.show);
         PubSub.default.sub("activeDocumentChanged", (doc) => displayHome(app, doc === undefined));
-        PubSub.default.sub("showHome", () => displayHome(app, true));
+        PubSub.default.sub("displayHome", (show) => displayHome(app, show));
     }
 
     private displayHome = (app: IApplication, displayHome: boolean) => {
diff --git a/packages/chili-ui/src/permanent.module.css b/packages/chili-ui/src/permanent.module.css
new file mode 100644
index 00000000..2514acf1
--- /dev/null
+++ b/packages/chili-ui/src/permanent.module.css
@@ -0,0 +1,46 @@
+dialog {
+    border: none;
+    box-shadow: 0px 1px 2px #999;
+    border-radius: 16px;
+    padding: 0px;
+}
+
+dialog::backdrop {
+    background-color: rgba(0, 0, 0, 0.5);
+}
+
+.loading {
+    position: relative;
+    width: 48px;
+    height: 48px;
+    border: 2px solid #000;
+    border-top-color: rgba(0, 0, 0, 0.2);
+    border-right-color: rgba(0, 0, 0, 0.2);
+    border-bottom-color: rgba(0, 0, 0, 0.2);
+    border-radius: 100%;
+
+    animation: circle infinite 0.75s linear;
+}
+
+@keyframes circle {
+    0% {
+        transform: rotate(0);
+    }
+
+    100% {
+        transform: rotate(360deg);
+    }
+}
+
+.container {
+    width: fit-content;
+    height: fit-content;
+    padding: 24px;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+.message {
+    margin-top: 12px;
+}
diff --git a/packages/chili-ui/src/permanent.ts b/packages/chili-ui/src/permanent.ts
new file mode 100644
index 00000000..7b08190e
--- /dev/null
+++ b/packages/chili-ui/src/permanent.ts
@@ -0,0 +1,25 @@
+// Copyright 2022-2023 the Chili authors. All rights reserved. AGPL-3.0 license.
+
+import { I18n, I18nKeys } from "chili-core";
+import { div, span } from "./controls";
+import style from "./permanent.module.css";
+
+export class Permanent {
+    static show(action: () => Promise<void>, message: I18nKeys, ...args: any[]) {
+        let dialog = document.createElement("dialog");
+        dialog.appendChild(
+            div(
+                { className: style.container },
+                div({ className: style.loading }),
+                span({
+                    className: style.message,
+                    textContent: I18n.translate(message, ...args),
+                }),
+            ),
+        );
+        document.body.appendChild(dialog);
+        action().finally(() => dialog.remove());
+
+        dialog.showModal();
+    }
+}
diff --git a/packages/chili-ui/src/ribbon/ribbon.ts b/packages/chili-ui/src/ribbon/ribbon.ts
index 10df34ab..7c18a514 100644
--- a/packages/chili-ui/src/ribbon/ribbon.ts
+++ b/packages/chili-ui/src/ribbon/ribbon.ts
@@ -152,7 +152,7 @@ export class Ribbon extends BindableElement {
                 label({
                     textContent: localize("ribbon.tab.file"),
                     className: style.startup,
-                    onclick: () => PubSub.default.pub("showHome"),
+                    onclick: () => PubSub.default.pub("displayHome", true),
                 }),
                 items({
                     sources: dataContent.ribbonTabs,
diff --git a/packages/chili/src/commands/application/openDocument.ts b/packages/chili/src/commands/application/openDocument.ts
index 1b65c9ca..2a93815a 100644
--- a/packages/chili/src/commands/application/openDocument.ts
+++ b/packages/chili/src/commands/application/openDocument.ts
@@ -1,6 +1,16 @@
 // Copyright 2022-2023 the Chili authors. All rights reserved. AGPL-3.0 license.
 
-import { IApplication, ICommand, IView, PubSub, Serialized, command, readFileAsync } from "chili-core";
+import {
+    AsyncController,
+    I18n,
+    IApplication,
+    ICommand,
+    IView,
+    PubSub,
+    Serialized,
+    command,
+    readFileAsync,
+} from "chili-core";
 
 @command({
     name: "doc.open",
@@ -9,11 +19,18 @@ import { IApplication, ICommand, IView, PubSub, Serialized, command, readFileAsy
 })
 export class OpenDocument implements ICommand {
     async execute(app: IApplication): Promise<void> {
-        let files = await readFileAsync(".cd", false);
-        if (files.status === "success") {
-            let json: Serialized = JSON.parse(files.value[0].data);
-            let document = await app.loadDocument(json);
-            document.visual.viewer.activeView?.cameraController.fitContent();
-        }
+        PubSub.default.pub(
+            "showPermanent",
+            async () => {
+                let files = await readFileAsync(".cd", false);
+                if (files.status === "success") {
+                    let json: Serialized = JSON.parse(files.value[0].data);
+                    let document = await app.loadDocument(json);
+                    document.visual.viewer.activeView?.cameraController.fitContent();
+                }
+            },
+            "toast.excuting{0}",
+            I18n.translate("command.document.open"),
+        );
     }
 }
diff --git a/packages/chili/src/commands/application/saveDocument.ts b/packages/chili/src/commands/application/saveDocument.ts
index 57b8629b..98e5b3c6 100644
--- a/packages/chili/src/commands/application/saveDocument.ts
+++ b/packages/chili/src/commands/application/saveDocument.ts
@@ -1,6 +1,6 @@
 // Copyright 2022-2023 the Chili authors. All rights reserved. AGPL-3.0 license.
 
-import { command, IApplication, ICommand, PubSub } from "chili-core";
+import { AsyncController, command, I18n, IApplication, ICommand, PubSub } from "chili-core";
 
 @command({
     name: "doc.save",
@@ -9,11 +9,15 @@ import { command, IApplication, ICommand, PubSub } from "chili-core";
 })
 export class SaveDocument implements ICommand {
     async execute(app: IApplication): Promise<void> {
-        if (app.activeDocument) {
-            await app.activeDocument.save();
-            PubSub.default.pub("showToast", "toast.document.saved");
-        } else {
-            PubSub.default.pub("showToast", "toast.document.noActived");
-        }
+        if (!app.activeDocument) return;
+        PubSub.default.pub(
+            "showPermanent",
+            async () => {
+                await app.activeDocument!.save();
+                PubSub.default.pub("showToast", "toast.document.saved");
+            },
+            "toast.excuting{0}",
+            I18n.translate("command.document.save"),
+        );
     }
 }
diff --git a/packages/chili/src/commands/application/toFile.ts b/packages/chili/src/commands/application/toFile.ts
index 07ef839c..9a334bb4 100644
--- a/packages/chili/src/commands/application/toFile.ts
+++ b/packages/chili/src/commands/application/toFile.ts
@@ -1,6 +1,6 @@
 // Copyright 2022-2023 the Chili authors. All rights reserved. AGPL-3.0 license.
 
-import { command, download, IApplication, ICommand, PubSub } from "chili-core";
+import { AsyncController, command, download, I18n, IApplication, ICommand, PubSub } from "chili-core";
 
 @command({
     name: "doc.saveToFile",
@@ -9,10 +9,19 @@ import { command, download, IApplication, ICommand, PubSub } from "chili-core";
 })
 export class SaveDocumentToFile implements ICommand {
     async execute(app: IApplication): Promise<void> {
-        if (app.activeDocument) {
-            let s = app.activeDocument.serialize();
-            PubSub.default.pub("showToast", "toast.downloading");
-            download([JSON.stringify(s)], `${app.activeDocument.name}.cd`);
-        }
+        if (!app.activeDocument) return;
+        PubSub.default.pub(
+            "showPermanent",
+            async () => {
+                await new Promise((r, j) => {
+                    setTimeout(r, 100);
+                });
+                let s = app.activeDocument!.serialize();
+                PubSub.default.pub("showToast", "toast.downloading");
+                download([JSON.stringify(s)], `${app.activeDocument!.name}.cd`);
+            },
+            "toast.excuting{0}",
+            I18n.translate("command.document.saveToFile"),
+        );
     }
 }
diff --git a/packages/chili/src/commands/importExport.ts b/packages/chili/src/commands/importExport.ts
index e1713600..060fffd3 100644
--- a/packages/chili/src/commands/importExport.ts
+++ b/packages/chili/src/commands/importExport.ts
@@ -3,6 +3,7 @@
 import {
     AsyncController,
     GeometryModel,
+    I18n,
     IApplication,
     ICommand,
     IDocument,
@@ -29,13 +30,19 @@ let count = 1;
 })
 export class Import implements ICommand {
     async execute(application: IApplication): Promise<void> {
-        let document = application.activeDocument;
-        if (!document) return;
-        let shape = await this.readShape(application);
-        Transaction.excute(document, "import model", () => {
-            this.addImportedShape(document!, shape);
-        });
-        document.visual.viewer.activeView?.cameraController.fitContent();
+        if (!application.activeDocument) return;
+        PubSub.default.pub(
+            "showPermanent",
+            async () => {
+                let shape = await this.readShape(application);
+                Transaction.excute(application.activeDocument!, "import model", () => {
+                    this.addImportedShape(application.activeDocument!, shape);
+                });
+                application.activeDocument!.visual.viewer.activeView?.cameraController.fitContent();
+            },
+            "toast.excuting{0}",
+            I18n.translate("command.import"),
+        );
     }
 
     private addImportedShape = (document: IDocument, shape: [string | undefined, Result<IShape[]>]) => {
@@ -75,36 +82,44 @@ abstract class Export implements ICommand {
     async execute(application: IApplication): Promise<void> {
         if (!application.activeDocument) return;
         let type = this.getType();
-        let data = await this.convertShapeAsync(application, type);
-        if (data) {
-            PubSub.default.pub("showToast", "toast.downloading");
-            download([data.data], `${data.name}.${type}`);
-        }
-    }
-
-    abstract getType(): "iges" | "step";
-
-    protected async convertShapeAsync(application: IApplication, type: "iges" | "step") {
         let models = await this.selectModelsAsync(application);
         if (!models || models.length === 0) {
             PubSub.default.pub("showToast", "toast.select.noSelected");
             return;
         }
-        let shapes = models.map((x) => x.shape()!);
-        let shapeString =
-            type === "iges"
-                ? application.shapeFactory.converter.convertToIGES(...shapes)
-                : application.shapeFactory.converter.convertToSTEP(...shapes);
-        if (!shapeString.success) {
-            PubSub.default.pub("showToast", "toast.converter.error");
-            return;
-        }
-        return {
-            name: `${models[0].name}`,
-            data: shapeString.value,
-        };
+
+        PubSub.default.pub(
+            "showPermanent",
+            async () => {
+                let shapes = models!.map((x) => x.shape()!);
+                let shapeString = await this.convertAsync(application, type, ...shapes);
+                if (!shapeString.success) {
+                    PubSub.default.pub("showToast", "toast.converter.error");
+                    return;
+                }
+                PubSub.default.pub("showToast", "toast.downloading");
+                download([shapeString.value], `${models![0].name}.${type}`);
+            },
+            "toast.excuting{0}",
+            "",
+        );
     }
 
+    private async convertAsync(
+        application: IApplication,
+        type: string,
+        ...shapes: IShape[]
+    ): Promise<Result<string>> {
+        await new Promise((r, j) => {
+            setTimeout(r, 50);
+        }); // 等待弹窗完成
+        return type === "iges"
+            ? application.shapeFactory.converter.convertToIGES(...shapes)
+            : application.shapeFactory.converter.convertToSTEP(...shapes);
+    }
+
+    abstract getType(): "iges" | "step";
+
     private async selectModelsAsync(application: IApplication) {
         let models = application
             .activeDocument!.selection.getSelectedNodes()