diff --git a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
index f65123720..03ea90822 100644
--- a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
@@ -105,14 +105,17 @@ class OtherConfigFragment : PreferenceFragment(),
             PreferKey.cleanCache -> clearCache()
             PreferKey.uploadRule -> showDialogFragment<DirectLinkUploadConfig>()
             PreferKey.checkSource -> showDialogFragment<CheckSourceConfig>()
-            PreferKey.bitmapCacheSize -> NumberPickerDialog(requireContext())
-                .setTitle(getString(R.string.bitmap_cache_size))
-                .setMaxValue(9999)
-                .setMinValue(1)
-                .setValue(AppConfig.bitmapCacheSize)
-                .show {
-                    AppConfig.bitmapCacheSize = it
-                }
+            PreferKey.bitmapCacheSize -> {
+                toastOnUi(R.string.restart_to_apply_changes)
+                NumberPickerDialog(requireContext())
+                    .setTitle(getString(R.string.bitmap_cache_size))
+                    .setMaxValue(9999)
+                    .setMinValue(1)
+                    .setValue(AppConfig.bitmapCacheSize)
+                    .show {
+                        AppConfig.bitmapCacheSize = it
+                    }
+            }
         }
         return super.onPreferenceTreeClick(preference)
     }
@@ -152,8 +155,6 @@ class OtherConfigFragment : PreferenceFragment(),
             }
             PreferKey.bitmapCacheSize -> {
                 upPreferenceSummary(key, AppConfig.bitmapCacheSize.toString())
-                // restart to apply changes
-                appCtx.restart()
             }
         }
     }
diff --git a/app/src/main/res/values-es-rES/strings.xml b/app/src/main/res/values-es-rES/strings.xml
index 4ff5bd117..413b4b2cc 100644
--- a/app/src/main/res/values-es-rES/strings.xml
+++ b/app/src/main/res/values-es-rES/strings.xml
@@ -990,5 +990,7 @@
     <string name="add_remote_book">WebDavBook</string>
     <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
     <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values-ja-rJP/strings.xml b/app/src/main/res/values-ja-rJP/strings.xml
index 6e4dcc414..0cb6d98b6 100644
--- a/app/src/main/res/values-ja-rJP/strings.xml
+++ b/app/src/main/res/values-ja-rJP/strings.xml
@@ -993,5 +993,7 @@
     <string name="add_remote_book">WebDavBook</string>
     <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
     <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
     <!-- string end -->
+
 </resources>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 389fd7309..fa88aca97 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -993,5 +993,7 @@
     <string name="add_remote_book">WebDavBook</string>
     <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
     <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
+
     <!-- string end -->
 </resources>
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 80381c88c..b09e0fa3e 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -990,6 +990,7 @@
     <string name="add_remote_book">WebDav书籍</string>
     <string name="bitmap_cache_size_summary">当前最大缓存 %1$s MB</string>
     <string name="bitmap_cache_size">图片绘制缓存</string>
+    <string name="restart_to_apply_changes">重启应用更改</string>
 
     <!-- string end -->
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index d7026631b..12bb25266 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -992,6 +992,7 @@
     <string name="add_remote_book">WebDav书籍</string>
     <string name="bitmap_cache_size_summary">当前最大缓存 %1$s MB</string>
     <string name="bitmap_cache_size">图片绘制缓存</string>
+    <string name="restart_to_apply_changes">重启应用更改</string>
 
     <!-- string end -->
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 79233a087..2ca7d0784 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -992,6 +992,7 @@
     <string name="add_remote_book">WebDav书籍</string>
     <string name="bitmap_cache_size_summary">当前最大缓存 %1$s MB</string>
     <string name="bitmap_cache_size">图片绘制缓存</string>
+    <string name="restart_to_apply_changes">重启应用更改</string>
 
     <!-- string end -->
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 59d97e45a..a0cbbb3fb 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -993,5 +993,7 @@
     <string name="add_remote_book">WebDavBook</string>
     <string name="bitmap_cache_size_summary">Current cache max size %1$s MB</string>
     <string name="bitmap_cache_size">bitmap cache size</string>
+    <string name="restart_to_apply_changes">Restart to apply changes</string>
     <!-- string end -->
+
 </resources>