diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index cec67c27e..809de0b57 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -7,6 +7,7 @@
 * 修复分享内容不对的bug
 * 优化主题颜色,添加透明度
 * rss分类url支持js
+* 打开阅读时同步阅读进度
 
 **2021/02/09**
 * 修复分组内书籍数目少于搜索线程数目，会导致搜索线程数目变低
diff --git a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
index 7a224f3bc..2dc0feb0b 100644
--- a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
@@ -9,6 +9,7 @@ import io.legado.app.data.appDb
 import io.legado.app.databinding.ActivityWelcomeBinding
 import io.legado.app.help.AppConfig
 import io.legado.app.help.coroutine.Coroutine
+import io.legado.app.help.storage.BookWebDav
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.main.MainActivity
@@ -48,7 +49,25 @@ open class WelcomeActivity : BaseActivity<ActivityWelcomeBinding>() {
                 else -> null
             }
         }
-        binding.root.postDelayed({ startMainActivity() }, 500)
+        Coroutine.async(this) {
+            val books = appDb.bookDao.all
+            books.forEach { book ->
+                BookWebDav.getBookProgress(book)?.let { bookProgress ->
+                    if (bookProgress.durChapterIndex > book.durChapterIndex ||
+                        (bookProgress.durChapterIndex == book.durChapterIndex &&
+                                bookProgress.durChapterPos > book.durChapterPos)
+                    ) {
+                        book.durChapterIndex = bookProgress.durChapterIndex
+                        book.durChapterPos = bookProgress.durChapterPos
+                        book.durChapterTitle = bookProgress.durChapterTitle
+                        book.durChapterTime = bookProgress.durChapterTime
+                    }
+                }
+            }
+            appDb.bookDao.update(*books.toTypedArray())
+        }.onFinally {
+            binding.root.postDelayed({ startMainActivity() }, 300)
+        }
     }
 
     private fun startMainActivity() {