diff --git a/src/manage/qd/BookChapter.tsx b/src/manage/qd/BookChapter.tsx
index 4306278..44759a8 100644
--- a/src/manage/qd/BookChapter.tsx
+++ b/src/manage/qd/BookChapter.tsx
@@ -6,7 +6,7 @@ import { useDb } from "../dbProvider";
 import type { QdChapterInfo } from "../../types";
 import type { Volume } from "../../qdtypes";
 import { useBookInfo } from "./BookInfoProvider";
-import { get_new_volumes } from "../../utils/qd";
+import { ChapterShowMode, get_new_volumes } from "../../utils/qd";
 import VolumesList from "./VolumesList";
 import styles from './BookChapter.module.css';
 import ChapterEditor from "./ChapterEditor";
@@ -79,8 +79,8 @@ export default function BookChapter() {
     }
     let vols: Volume[] = bookInfo.volumes;
     if (bookStatus.chapterLists) {
-        vols = get_new_volumes(bookStatus.chapterLists, bookInfo.volumes, !bookStatus.showSavedOnly);
-    } else if (bookStatus.showSavedOnly) {
+        vols = get_new_volumes(bookStatus.chapterLists, bookInfo.volumes, bookStatus.chapterShowMode);
+    } else if (bookStatus.chapterShowMode != ChapterShowMode.All) {
         vols = [];
     }
     return (<>
@@ -90,8 +90,8 @@ export default function BookChapter() {
             }, 1);
         }}>
             <Splitter.Panel min='20%' max='40%' defaultSize='30%' collapsible className={styles.chs}>
-                {bookStatus.showSavedOnly && listErr && <Result status="error" title="加载章节列表失败" subTitle={listErr} extra={<Button type="primary" onClick={handle_list_load}>重试</Button>} />}
-                {bookStatus.showSavedOnly && !bookStatus.chapterLists && !listErr && <Skeleton active />}
+                {bookStatus.chapterShowMode != ChapterShowMode.All && listErr && <Result status="error" title="加载章节列表失败" subTitle={listErr} extra={<Button type="primary" onClick={handle_list_load}>重试</Button>} />}
+                {bookStatus.chapterShowMode != ChapterShowMode.All && !bookStatus.chapterLists && !listErr && <Skeleton active />}
                 {vols.length > 0 && <VolumesList bookId={bookInfo.id} volumes={vols} oneLine />}
             </Splitter.Panel>
             <Splitter.Panel className={styles.chc}>
diff --git a/src/manage/qd/BookIndex.tsx b/src/manage/qd/BookIndex.tsx
index 3e0e9e0..753914c 100644
--- a/src/manage/qd/BookIndex.tsx
+++ b/src/manage/qd/BookIndex.tsx
@@ -1,4 +1,4 @@
-import { Affix, Flex, Space, Tag, Typography, Switch, Skeleton, Result, Button } from "antd";
+import { Affix, Flex, Space, Tag, Typography, Skeleton, Result, Button } from "antd";
 import { useBookInfo } from "./BookInfoProvider";
 import styles from './BookIndex.module.css';
 import { loadChapterListsIfNeeded, useBookContext, useBookStatus } from "./BookStatusProvider";
@@ -6,7 +6,8 @@ import VolumesList from "./VolumesList";
 import { useEffect, useState } from "react";
 import { useDb } from "../dbProvider";
 import type { Volume } from "../../qdtypes";
-import { get_new_volumes } from "../../utils/qd";
+import { ChapterShowMode, get_new_volumes } from "../../utils/qd";
+import ShowMode from "./ShowMode";
 
 const { Paragraph, Link } = Typography;
 
@@ -18,8 +19,8 @@ export default function BookIndex() {
     const [bookStatus, setBookStatus] = useBookStatus();
     const setItems = useBookContext();
     const [err, setErr] = useState<string | null>(null);
-    function setShowSavedOnly(showSavedOnly: boolean) {
-        setBookStatus({ ...bookStatus, showSavedOnly });
+    function setChapterShowMode(chapterShowMode: ChapterShowMode) {
+        setBookStatus({ ...bookStatus, chapterShowMode });
     }
     function handle() {
         if (err) {
@@ -36,8 +37,8 @@ export default function BookIndex() {
     setItems([]);
     let vols: Volume[] = bookInfo.volumes;
     if (bookStatus.chapterLists) {
-        vols = get_new_volumes(bookStatus.chapterLists, bookInfo.volumes, !bookStatus.showSavedOnly);
-    } else if (bookStatus.showSavedOnly) {
+        vols = get_new_volumes(bookStatus.chapterLists, bookInfo.volumes, bookStatus.chapterShowMode);
+    } else if (bookStatus.chapterShowMode != ChapterShowMode.All) {
         vols = [];
     }
     return (
@@ -64,11 +65,11 @@ export default function BookIndex() {
             </Flex>
             <Affix offsetTop={10}>
                 <Flex justify="flex-end" className={styles.affix}>
-                    <Switch checked={bookStatus.showSavedOnly} onChange={setShowSavedOnly} checkedChildren="仅显示已保存章节" unCheckedChildren="显示所有章节" />
+                    <ShowMode mode={bookStatus.chapterShowMode} onChange={setChapterShowMode} />
                 </Flex>
             </Affix>
-            {bookStatus.showSavedOnly && err && <Result status="error" title="加载章节列表失败" subTitle={err} extra={<Button type="primary" onClick={handle}>重试</Button>} />}
-            {bookStatus.showSavedOnly && !bookStatus.chapterLists && !err && <Skeleton active />}
+            {bookStatus.chapterShowMode != ChapterShowMode.All && err && <Result status="error" title="加载章节列表失败" subTitle={err} extra={<Button type="primary" onClick={handle}>重试</Button>} />}
+            {bookStatus.chapterShowMode != ChapterShowMode.All && !bookStatus.chapterLists && !err && <Skeleton active />}
             {vols.length > 0 && <VolumesList bookId={bookInfo.id} volumes={vols} />}
         </div>
     );
diff --git a/src/manage/qd/BookStatusProvider.ts b/src/manage/qd/BookStatusProvider.ts
index 072fbd8..38a301c 100644
--- a/src/manage/qd/BookStatusProvider.ts
+++ b/src/manage/qd/BookStatusProvider.ts
@@ -3,15 +3,16 @@ import { QdChapterSimpleInfo } from "../../types";
 import { Db } from "../../db/interfaces";
 import { useOutletContext } from "react-router";
 import type { ItemType } from "antd/es/breadcrumb/Breadcrumb";
+import { ChapterShowMode } from "../../utils/qd";
 
 export type BookStatus = {
-    showSavedOnly: boolean;
+    chapterShowMode: ChapterShowMode;
     chapterLists?: QdChapterSimpleInfo[];
 }
 
 export function createBookStatus(): BookStatus {
     return {
-        showSavedOnly: false,
+        chapterShowMode: ChapterShowMode.All,
     }
 }
 
diff --git a/src/manage/qd/ShowMode.tsx b/src/manage/qd/ShowMode.tsx
new file mode 100644
index 0000000..06440b7
--- /dev/null
+++ b/src/manage/qd/ShowMode.tsx
@@ -0,0 +1,28 @@
+import { Select } from "antd";
+import { ChapterShowMode } from "../../utils/qd"
+
+const TEXTS = {
+    [ChapterShowMode.All]: "显示所有章节",
+    [ChapterShowMode.SavedOnly]: "仅显示已保存章节",
+    [ChapterShowMode.UnsavedOnly]: "仅显示未保存章节",
+}
+
+export interface ShowModeProps {
+    mode: ChapterShowMode;
+    onChange: (mode: ChapterShowMode) => void;
+}
+
+export default function ShowMode({ mode, onChange }: ShowModeProps) {
+    return (
+        <Select
+            value={mode}
+            onChange={onChange}
+            options={
+                Object.values(ChapterShowMode).filter(value => typeof value === 'number').map(value => ({
+                    label: TEXTS[value as ChapterShowMode],
+                    value,
+                }))
+            }
+        />
+    );
+}
diff --git a/src/qdchapter.ts b/src/qdchapter.ts
index 7dc0b33..7838ca8 100644
--- a/src/qdchapter.ts
+++ b/src/qdchapter.ts
@@ -41,6 +41,10 @@ async function load() {
     } else {
         contents = get_chapter_content(chapterInfo.content);
     }
+    if (contents.length === 0) {
+        setTimeout(load, 1000);
+        return;
+    }
     // Clear encrypted content to reduce size.
     chapterInfo.content = '';
     const msg: SendMessage = {
diff --git a/src/utils/qd.ts b/src/utils/qd.ts
index f31abe9..58a1b4a 100644
--- a/src/utils/qd.ts
+++ b/src/utils/qd.ts
@@ -3,6 +3,13 @@ import type { QdChapterInfo, QdChapterSimpleInfo } from "../types";
 import { get_chapter_content, toHex } from "../utils";
 import type { Chapter, Volume } from "../qdtypes";
 
+export enum ChapterShowMode {
+    All,
+    SavedOnly,
+    UnsavedOnly,
+}
+
+
 export function hash_qdchapter_info(info: QdChapterInfo): string {
     const encoder = new TextEncoder();
     const h = new SHA256();
@@ -29,9 +36,9 @@ export function hash_qdchapter_info(info: QdChapterInfo): string {
     return toHex(hash);
 }
 
-export function get_new_volumes(chapterLists: QdChapterSimpleInfo[], volumes: Volume[], keep=true): Volume[] {
+export function get_new_volumes(chapterLists: QdChapterSimpleInfo[], volumes: Volume[], keepMode: ChapterShowMode): Volume[] {
     const vols: Volume[] = [];
-    if (keep) {
+    if (keepMode == ChapterShowMode.All) {
         const volMap: Map<number, Chapter> = new Map();
         for (const vo of volumes) {
             const vol = structuredClone(vo);
@@ -61,7 +68,7 @@ export function get_new_volumes(chapterLists: QdChapterSimpleInfo[], volumes: Vo
                 isVip: false,
             });
         }
-    } else {
+    } else if (keepMode == ChapterShowMode.SavedOnly) {
         const chIds = new Set(chapterLists.map(ch => ch.id));
         for (const vol of volumes) {
             const newChs = vol.chapters.filter(ch => chIds.has(ch.id));
@@ -72,6 +79,17 @@ export function get_new_volumes(chapterLists: QdChapterSimpleInfo[], volumes: Vo
                 });
             }
         }
+    } else if (keepMode == ChapterShowMode.UnsavedOnly) {
+        const chIds = new Set(chapterLists.map(ch => ch.id));
+        for (const vol of volumes) {
+            const newChs = vol.chapters.filter(ch => !chIds.has(ch.id));
+            if (newChs.length > 0) {
+                vols.push({
+                    ...vol,
+                    chapters: newChs,
+                });
+            }
+        }
     }
     return vols;
 }