diff --git a/app/src/main/java/com/hippo/ehviewer/Settings.java b/app/src/main/java/com/hippo/ehviewer/Settings.java
index f2bfc5b3d..311ac4aeb 100644
--- a/app/src/main/java/com/hippo/ehviewer/Settings.java
+++ b/app/src/main/java/com/hippo/ehviewer/Settings.java
@@ -822,6 +822,13 @@ public class Settings {
         putString(KEY_SECURITY, value);
     }
 
+    public static final String KEY_READ_CACHE_SIZE = "read_cache_size";
+    public static final int DEFAULT_READ_CACHE_SIZE = 160;
+
+    public static int getReadCacheSize() {
+        return getIntFromStr(KEY_READ_CACHE_SIZE, DEFAULT_READ_CACHE_SIZE);
+    }
+
     /********************
      ****** Guide
      ********************/
diff --git a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java
index e0f8a57ac..d5b81c61c 100644
--- a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java
+++ b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java
@@ -34,6 +34,7 @@ import com.hippo.unifile.FilenameFilter;
 import com.hippo.unifile.UniFile;
 import com.hippo.yorozuya.FileUtils;
 import com.hippo.yorozuya.IOUtils;
+import com.hippo.yorozuya.MathUtils;
 import com.hippo.yorozuya.Utilities;
 import com.hippo.yorozuya.io.InputStreamPipe;
 import com.hippo.yorozuya.io.OutputStreamPipe;
@@ -54,7 +55,8 @@ public final class SpiderDen {
     private static SimpleDiskCache sCache;
 
     public static void initialize(Context context) {
-        sCache = new SimpleDiskCache(new File(context.getCacheDir(), "image"), 160 * 1024 * 1024);
+        sCache = new SimpleDiskCache(new File(context.getCacheDir(), "image"),
+                MathUtils.clamp(Settings.getReadCacheSize(), 40, 640) * 1024 * 1024);
     }
 
     private static class StartWithFilenameFilter implements FilenameFilter {
diff --git a/app/src/main/java/com/hippo/preference/ListPreference.java b/app/src/main/java/com/hippo/preference/ListPreference.java
index 25e4ceb6b..b15505cd5 100644
--- a/app/src/main/java/com/hippo/preference/ListPreference.java
+++ b/app/src/main/java/com/hippo/preference/ListPreference.java
@@ -25,6 +25,7 @@ import android.support.annotation.ArrayRes;
 import android.support.v7.app.AlertDialog;
 import android.text.TextUtils;
 import android.util.AttributeSet;
+import android.util.Log;
 
 import com.hippo.ehviewer.R;
 
@@ -139,6 +140,9 @@ public class ListPreference extends DialogPreference {
      * @param value The value to set for the key.
      */
     public void setValue(String value) {
+
+        Log.d("TAG", "value = " + value);
+
         // Always persist/notify the first time.
         final boolean changed = !TextUtils.equals(mValue, value);
         if (changed || !mValueSet) {
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 5580f6882..aec40bd9e 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -446,6 +446,7 @@
     <string name="settings_advanced_clear_download_path_cache_message">清除画廊下载路径缓存？</string>
     <string name="settings_advanced_clear_memory_cache">清理内存缓存</string>
     <string name="settings_advanced_clear_memory_cache_summary">清理缩略图、画廊信息的内存缓存</string>
+    <string name="settings_advanced_read_cache_size">阅读缓存大小</string>
     <string name="settings_advanced_pattern_protection_title">图案保护</string>
     <string name="settings_advanced_pattern_protection_not_set">未设置图案保护</string>
     <string name="settings_advanced_pattern_protection_set">已设置图案保护</string>
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 1a78b36ba..7e4f281d5 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -446,6 +446,7 @@
     <string name="settings_advanced_clear_download_path_cache_message">清除畫廊下載路徑緩存？</string>
     <string name="settings_advanced_clear_memory_cache">清理內存緩存</string>
     <string name="settings_advanced_clear_memory_cache_summary">清理縮略圖、畫廊信息的內存緩存</string>
+    <string name="settings_advanced_read_cache_size">閲讀緩存大小</string>
     <string name="settings_advanced_pattern_protection_title">圖案保護</string>
     <string name="settings_advanced_pattern_protection_not_set">未設置圖案保護</string>
     <string name="settings_advanced_pattern_protection_set">已設置圖案保護</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 7b7a888da..befb179b0 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -446,6 +446,7 @@
     <string name="settings_advanced_clear_download_path_cache_message">清除畫廊下載路徑快取？</string>
     <string name="settings_advanced_clear_memory_cache">清理記憶體快取</string>
     <string name="settings_advanced_clear_memory_cache_summary">清理縮圖、畫廊資訊的記憶體快取</string>
+    <string name="settings_advanced_read_cache_size">閱讀快取大小</string>
     <string name="settings_advanced_pattern_protection_title">圖案保護</string>
     <string name="settings_advanced_pattern_protection_not_set">未設定圖案保護</string>
     <string name="settings_advanced_pattern_protection_set">已設定圖案保護</string>
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index c518d75ee..dc7334eff 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -144,6 +144,22 @@
         <item>4</item>
     </string-array>
 
+    <string-array name="read_cache_size_entries" translatable="false">
+        <item>40 MB</item>
+        <item>80 MB</item>
+        <item>160 MB</item>
+        <item>320 MB</item>
+        <item>640 MB</item>
+    </string-array>
+
+    <string-array name="read_cache_size_entry_values" translatable="false">
+        <item>40</item>
+        <item>80</item>
+        <item>160</item>
+        <item>320</item>
+        <item>640</item>
+    </string-array>
+
     <string-array name="page_menu_entries">
         <item>@string/page_menu_refresh</item>
         <item>@string/page_menu_share</item>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 2ae4de545..b95644217 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -488,6 +488,7 @@
     <string name="settings_advanced_clear_download_path_cache_message">Clear download path cache?</string>
     <string name="settings_advanced_clear_memory_cache">Clear memory cache</string>
     <string name="settings_advanced_clear_memory_cache_summary">Clear thumb, gallery info memory cache</string>
+    <string name="settings_advanced_read_cache_size">Read cache size</string>
     <string name="settings_advanced_pattern_protection_title">Pattern protection</string>
     <string name="settings_advanced_pattern_protection_not_set">Pattern protection has not been set</string>
     <string name="settings_advanced_pattern_protection_set">Pattern protection has been set</string>
diff --git a/app/src/main/res/xml/advanced_settings.xml b/app/src/main/res/xml/advanced_settings.xml
index 7530cafae..e351ccf68 100644
--- a/app/src/main/res/xml/advanced_settings.xml
+++ b/app/src/main/res/xml/advanced_settings.xml
@@ -39,6 +39,15 @@
         android:title="@string/settings_advanced_clear_memory_cache"
         android:summary="@string/settings_advanced_clear_memory_cache_summary"/>
 
+    <com.hippo.preference.ListPreference
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:key="read_cache_size"
+        android:title="@string/settings_advanced_read_cache_size"
+        android:summary="%s"
+        app:entries="@array/read_cache_size_entries"
+        app:entryValues="@array/read_cache_size_entry_values"
+        android:defaultValue="160"/>
+
     <com.hippo.preference.ActivityPreference
         xmlns:app="http://schemas.android.com/apk/res-auto"
         android:key="pattern_protection"