diff --git a/app/src/main/java/io/legado/app/data/AppDatabase.kt b/app/src/main/java/io/legado/app/data/AppDatabase.kt
index c48736382..70c05de42 100644
--- a/app/src/main/java/io/legado/app/data/AppDatabase.kt
+++ b/app/src/main/java/io/legado/app/data/AppDatabase.kt
@@ -22,8 +22,8 @@ val appDb by lazy {
         ReplaceRule::class, SearchBook::class, SearchKeyword::class, Cookie::class,
         RssSource::class, Bookmark::class, RssArticle::class, RssReadRecord::class,
         RssStar::class, TxtTocRule::class, ReadRecord::class, HttpTTS::class, Cache::class,
-        RuleSub::class, EpubChapter::class],
-    version = 31,
+        RuleSub::class],
+    version = 32,
     exportSchema = true
 )
 abstract class AppDatabase : RoomDatabase() {
@@ -45,7 +45,6 @@ abstract class AppDatabase : RoomDatabase() {
     abstract val httpTTSDao: HttpTTSDao
     abstract val cacheDao: CacheDao
     abstract val ruleSubDao: RuleSubDao
-    abstract val epubChapterDao: EpubChapterDao
 
     companion object {
 
@@ -59,7 +58,8 @@ abstract class AppDatabase : RoomDatabase() {
                     migration_14_15, migration_15_17, migration_17_18, migration_18_19,
                     migration_19_20, migration_20_21, migration_21_22, migration_22_23,
                     migration_23_24, migration_24_25, migration_25_26, migration_26_27,
-                    migration_27_28, migration_28_29, migration_29_30, migration_30_31
+                    migration_27_28, migration_28_29, migration_29_30, migration_30_31,
+                    migration_31_32
                 )
                 .allowMainThreadQueries()
                 .addCallback(dbCallback)
@@ -290,6 +290,12 @@ abstract class AppDatabase : RoomDatabase() {
                 database.execSQL("insert into readRecord (deviceId, bookName, readTime) select androidId, bookName, readTime from readRecord1")
             }
         }
+
+        private val migration_31_32 = object : Migration(31, 32) {
+            override fun migrate(database: SupportSQLiteDatabase) {
+                database.execSQL("DROP TABLE `epubChapters`")
+            }
+        }
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/dao/EpubChapterDao.kt b/app/src/main/java/io/legado/app/data/dao/EpubChapterDao.kt
deleted file mode 100644
index cf2f66d2a..000000000
--- a/app/src/main/java/io/legado/app/data/dao/EpubChapterDao.kt
+++ /dev/null
@@ -1,32 +0,0 @@
-package io.legado.app.data.dao
-
-import androidx.room.*
-import io.legado.app.data.entities.EpubChapter
-
-@Dao
-interface EpubChapterDao {
-    @get:Query("select * from epubChapters")
-    val all: List<EpubChapter>
-
-    @Query("select count(*) from epubChapters Where bookUrl = :bookUrl")
-    fun getCnt(bookUrl: String): Int
-
-    @Query("select * from epubChapters Where bookUrl = :bookUrl and parentHref = :parentHref ")
-    fun get(bookUrl: String, parentHref: String): List<EpubChapter>
-
-    @Insert(onConflict = OnConflictStrategy.REPLACE)
-    fun insert(vararg chapter: EpubChapter)
-
-    @Query("delete from epubChapters")
-    fun clear()
-
-    @Query("delete from epubChapters Where bookUrl = :bookUrl")
-    fun deleteByName(bookUrl: String)
-
-    @Delete
-    fun delete(vararg chapter: EpubChapter)
-
-    @Update
-    fun update(vararg chapter: EpubChapter)
-
-}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/EpubChapter.kt b/app/src/main/java/io/legado/app/data/entities/EpubChapter.kt
deleted file mode 100644
index 390b63a64..000000000
--- a/app/src/main/java/io/legado/app/data/entities/EpubChapter.kt
+++ /dev/null
@@ -1,23 +0,0 @@
-package io.legado.app.data.entities
-
-import androidx.room.Entity
-import androidx.room.ForeignKey
-import androidx.room.Index
-
-@Entity(
-    tableName = "epubChapters",
-    primaryKeys = ["bookUrl", "href"],
-    indices = [(Index(value = ["bookUrl"], unique = false)),
-        (Index(value = ["bookUrl", "href"], unique = true))],
-    foreignKeys = [(ForeignKey(
-        entity = Book::class,
-        parentColumns = ["bookUrl"],
-        childColumns = ["bookUrl"],
-        onDelete = ForeignKey.CASCADE
-    ))]
-)
-data class EpubChapter(
-    var bookUrl: String = "",
-    var href: String = "",
-    var parentHref: String? = null,
-)
\ No newline at end of file