diff --git a/README.md b/README.md
index 5e7da18..ac3d8d6 100644
--- a/README.md
+++ b/README.md
@@ -437,6 +437,7 @@ dockge/komodo 等 docker compose UI 也有自动更新功能
 | VIDEOINFO_CACHE_MINUTES                  | 私人影库视频信息在内存中的缓存时长（分钟）                   | 正整数                      | 1440（1天）                                                  |
 | NEXT_PUBLIC_ENABLE_SOURCE_SEARCH         | 是否开启源站寻片功能                                         | true/false                  | true                                                         |
 | MAX_PLAY_RECORDS_PER_USER                | 单个用户播放记录清理阈值（超过此数量将自动清理旧记录）       | 正整数                      | 100                                                          |
+| MAX_MANGA_HISTORY_PER_USER              | 单个用户漫画阅读历史保留上限 | 正整数                      | 100                                                          |
 | INIT_CONFIG                              | 初始配置（JSON 格式，包含 api_site、custom_category、lives 等） | JSON 字符串                 | (空)                                                         |
 | CONFIG_SUBSCRIPTION_URL                  | 配置订阅 URL（Base58 编码的配置文件地址，优先级高于 INIT_CONFIG） | URL                         | (空)                                                         |
 | TMDB_API_KEY                             | TMDB API 密钥                                                | 任意字符串                  | (空)                                                         |
diff --git a/src/lib/d1.db.ts b/src/lib/d1.db.ts
index 6f9138f..507c1ec 100644
--- a/src/lib/d1.db.ts
+++ b/src/lib/d1.db.ts
@@ -2068,13 +2068,14 @@ export class D1Storage implements IStorage {
   async cleanupOldMangaReadRecords(userName: string): Promise<void> {
     try {
       const maxRecords = parseInt(process.env.MAX_MANGA_HISTORY_PER_USER || '100', 10);
+      const threshold = maxRecords + 10;
       const countResult = await this.db
         .prepare('SELECT COUNT(*) as count FROM manga_read_records WHERE username = ?')
         .bind(userName)
         .first();
 
       const count = Number(countResult?.count || 0);
-      if (count <= maxRecords) return;
+      if (count <= threshold) return;
 
       await this.db
         .prepare(`
diff --git a/src/lib/db.client.ts b/src/lib/db.client.ts
index 7e8654b..7913bd7 100644
--- a/src/lib/db.client.ts
+++ b/src/lib/db.client.ts
@@ -95,6 +95,8 @@ const PLAY_RECORDS_KEY = 'moontv_play_records';
 const FAVORITES_KEY = 'moontv_favorites';
 const MANGA_SHELF_KEY = 'moontv_manga_shelf';
 const MANGA_HISTORY_KEY = 'moontv_manga_history';
+const DEFAULT_MAX_MANGA_HISTORY_RECORDS = 100;
+const DEFAULT_MAX_MANGA_HISTORY_THRESHOLD = DEFAULT_MAX_MANGA_HISTORY_RECORDS + 10;
 const SEARCH_HISTORY_KEY = 'moontv_search_history';
 const MUSIC_PLAY_RECORDS_KEY = 'moontv_music_play_records';
 
@@ -1701,6 +1703,17 @@ export async function clearAllMangaShelf(): Promise<void> {
   window.dispatchEvent(new CustomEvent('mangaShelfUpdated', { detail: {} }));
 }
 
+function trimMangaReadRecords(records: Record<string, MangaReadRecord>): Record<string, MangaReadRecord> {
+  const entries = Object.entries(records);
+  if (entries.length <= DEFAULT_MAX_MANGA_HISTORY_THRESHOLD) return records;
+
+  return Object.fromEntries(
+    entries
+      .sort(([, a], [, b]) => b.saveTime - a.saveTime)
+      .slice(0, DEFAULT_MAX_MANGA_HISTORY_RECORDS)
+  );
+}
+
 export async function getAllMangaReadRecords(): Promise<Record<string, MangaReadRecord>> {
   if (typeof window === 'undefined') return {};
 
@@ -1748,8 +1761,9 @@ export async function saveMangaReadRecord(sourceId: string, mangaId: string, rec
   if (STORAGE_TYPE !== 'localstorage') {
     const cached = cacheManager.getCachedMangaReadRecords() || {};
     cached[key] = record;
-    cacheManager.cacheMangaReadRecords(cached);
-    window.dispatchEvent(new CustomEvent('mangaHistoryUpdated', { detail: cached }));
+    const trimmedRecords = trimMangaReadRecords(cached);
+    cacheManager.cacheMangaReadRecords(trimmedRecords);
+    window.dispatchEvent(new CustomEvent('mangaHistoryUpdated', { detail: trimmedRecords }));
 
     try {
       await fetchWithAuth('/api/manga/history', {
@@ -1766,8 +1780,9 @@ export async function saveMangaReadRecord(sourceId: string, mangaId: string, rec
 
   const allRecords = await getAllMangaReadRecords();
   allRecords[key] = record;
-  localStorage.setItem(MANGA_HISTORY_KEY, JSON.stringify(allRecords));
-  window.dispatchEvent(new CustomEvent('mangaHistoryUpdated', { detail: allRecords }));
+  const trimmedRecords = trimMangaReadRecords(allRecords);
+  localStorage.setItem(MANGA_HISTORY_KEY, JSON.stringify(trimmedRecords));
+  window.dispatchEvent(new CustomEvent('mangaHistoryUpdated', { detail: trimmedRecords }));
 }
 
 export async function deleteMangaReadRecord(sourceId: string, mangaId: string): Promise<void> {
diff --git a/src/lib/postgres.db.ts b/src/lib/postgres.db.ts
index bbf3b15..00cde42 100644
--- a/src/lib/postgres.db.ts
+++ b/src/lib/postgres.db.ts
@@ -2037,13 +2037,14 @@ export class PostgresStorage implements IStorage {
   async cleanupOldMangaReadRecords(userName: string): Promise<void> {
     try {
       const maxRecords = parseInt(process.env.MAX_MANGA_HISTORY_PER_USER || '100', 10);
+      const threshold = maxRecords + 10;
       const countResult = await this.db
         .prepare('SELECT COUNT(*) as count FROM manga_read_records WHERE username = $1')
         .bind(userName)
         .first();
 
       const count = Number(countResult?.count || 0);
-      if (count <= maxRecords) return;
+      if (count <= threshold) return;
 
       await this.db
         .prepare(`
diff --git a/src/lib/redis-base.db.ts b/src/lib/redis-base.db.ts
index b98b51b..18fae9d 100644
--- a/src/lib/redis-base.db.ts
+++ b/src/lib/redis-base.db.ts
@@ -1557,6 +1557,8 @@ export abstract class BaseRedisStorage implements IStorage {
   async cleanupOldMangaReadRecords(userName: string): Promise<void> {
     const records = await this.getAllMangaReadRecords(userName);
     const maxRecords = parseInt(process.env.MAX_MANGA_HISTORY_PER_USER || '100', 10);
+    const threshold = maxRecords + 10;
+    if (Object.keys(records).length <= threshold) return;
     const keys = Object.entries(records)
       .sort(([, a], [, b]) => b.saveTime - a.saveTime)
       .slice(maxRecords)