diff --git a/app/src/main/java/io/legado/app/data/entities/Book.kt b/app/src/main/java/io/legado/app/data/entities/Book.kt
index f51e80159..543bd5101 100644
--- a/app/src/main/java/io/legado/app/data/entities/Book.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Book.kt
@@ -5,28 +5,33 @@ import androidx.room.*
 import kotlinx.android.parcel.Parcelize
 
 @Parcelize
-@Entity(tableName = "books",
-    indices = [(Index(value = ["url"]))])
+@Entity(tableName = "books", indices = [(Index(value = ["descUrl"]))])
 data class Book(@PrimaryKey
-                var url: String = "",
-                var name: String = "",
-                var tag: String = "",
-                var author: String? = null,
-                var coverUrl: String? = null,
-                var userCoverUrl: String? = null,
-                var introduction: String? = null,
-                var charset: String? = null,
-                var type: Int = 0,   // 0: text, 1: audio
-                var group: Int = 0,  // fenqu
-                var latestChapterName: String? = null,
-                var lastUpdateTime: Long? = null,
-                var latestChapterTime: Long? = null,
-                var durChapterIndex: Int = 0,
-                var durChapterPage: Int = 0,
-                var totalChapterNum: Int = 0,
-                var hasNewChapter: Boolean = false,
-                var canUpdate: Boolean = true
-                ) : Parcelable {
+                var descUrl: String = "",                   // 详情页Url(本地书源存储完整文件路径)
+                var sourceId: Int = -1,                     // 书源规则id(默认-1,表示本地书籍)
+                var name: String = "",                      // 书籍名称(允许用户修改,适用于本地书籍)
+                var author: String? = null,                 // 作者名称(允许用户修改,适用于本地书籍)
+                var tag: String? = null,                    // 分类信息(允许用户修改,适用于本地书籍)
+                var coverUrl: String? = null,               // 封面Url
+                var customCoverUrl: String? = null,         // 自定义封面Url
+                var description: String? = null,            // 简介内容
+                var charset: String? = null,                // 自定义字符集名称(仅适用于本地书籍)
+                var type: Int = 0,                          // 0: 文本读物, 1: 有声读物
+                var group: Int = 0,                         // 自定义分组索引号
+                var tocUrl: String = "",                    // 目录页Url (toc=table of Contents)
+                var latestChapterName: String? = null,      // 最新章节
+                var lastCheckTime: Long? = null,            // 最近一次更新书籍信息的时间
+                var latestChapterTime: Long? = null,        // 最近一次发现新章节的时间
+                var lastUpdateChapters: Int = 0,            // 最近一次发现新章节的数量
+                var durChapterName: String = "",            // 当前阅读的章节名称
+                var durChapterIndex: Int = 0,               // 当前阅读的章节分页索引
+                var durChapterPage: Int = 0,                // 当前阅读的章节总分页数
+                var durChapterTime: Long = 0,               // 最后一次阅读书籍的时间(打开正文的时间)
+                var totalChapterNum: Int = 0,               // 书籍目录总数
+                var hasNewChapter: Boolean = false,         // 是否在最后一次更新书籍信息时找到新章节
+                var allowUpdate: Boolean = true,            // 是否允许阅读自动管理更新书籍信息
+                var variable: String? = null                // 自定义书籍变量信息(用于书源规则检索书籍信息)
+) : Parcelable {
 
     fun getUnreadChapterNum() = Math.max(totalChapterNum - durChapterIndex - 1, 0)