diff --git a/app/src/main/java/org/itxtech/daedalus/provider/UdpProvider.java b/app/src/main/java/org/itxtech/daedalus/provider/UdpProvider.java
index 870da87..09ec5f4 100644
--- a/app/src/main/java/org/itxtech/daedalus/provider/UdpProvider.java
+++ b/app/src/main/java/org/itxtech/daedalus/provider/UdpProvider.java
@@ -11,6 +11,7 @@ import de.measite.minidns.DNSMessage;
 import de.measite.minidns.Record;
 import de.measite.minidns.record.A;
 import de.measite.minidns.record.AAAA;
+import org.itxtech.daedalus.Daedalus;
 import org.itxtech.daedalus.service.DaedalusVpnService;
 import org.itxtech.daedalus.util.Logger;
 import org.itxtech.daedalus.util.RuleResolver;
@@ -216,12 +217,13 @@ public class UdpProvider extends Provider {
      * @param responsePayload The payload of the response
      */
     void handleDnsResponse(IpPacket requestPacket, byte[] responsePayload) {
-        /*try {
-            DNSMessage message = new DNSMessage(responsePayload);
-            Logger.info(message.toString());
-        } catch (IOException e) {
-            Logger.logException(e);
-        }*/
+        if (Daedalus.getPrefs().getBoolean("settings_debug_output", false)) {
+            try {
+                Logger.debug(new DNSMessage(responsePayload).toString());
+            } catch (IOException e) {
+                Logger.logException(e);
+            }
+        }
         UdpPacket udpOutPacket = (UdpPacket) requestPacket.getPayload();
         UdpPacket.Builder payLoadBuilder = new UdpPacket.Builder(udpOutPacket)
                 .srcPort(udpOutPacket.getHeader().getDstPort())
@@ -308,6 +310,9 @@ public class UdpProvider extends Provider {
         DNSMessage dnsMsg;
         try {
             dnsMsg = new DNSMessage(dnsRawData);
+            if (Daedalus.getPrefs().getBoolean("settings_debug_output", false)) {
+                Logger.debug(dnsMsg.toString());
+            }
         } catch (IOException e) {
             Log.i(TAG, "handleDnsRequest: Discarding non-DNS or invalid packet", e);
             return;
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 9f25a9b..2c70fe8 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -81,6 +81,7 @@
     <string name="action_log">日志</string>
     <string name="action_refresh">刷新</string>
     <string name="settings_log_size">日志大小限制</string>
+    <string name="settings_debug_output">调试输出</string>
     <string name="server_cutedns_south_china">CuteDNS 华南</string>
     <string name="settings_allow_dynamic_rule_reload">允许动态更新规则</string>
     <string name="action_reload">重新加载规则</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 184b68b..ac6c40d 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -81,6 +81,7 @@
     <string name="action_log">紀錄檔</string>
     <string name="action_refresh">重新整理</string>
     <string name="settings_log_size">紀錄檔大小限制</string>
+    <string name="settings_debug_output">调试输出 TODO</string>
     <string name="server_cutedns_south_china">CuteDNS 中國華南</string>
     <string name="settings_allow_dynamic_rule_reload">允許動態規則重新載入</string>
     <string name="action_reload">重新載入</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index ae2da30..675df27 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -63,6 +63,7 @@
     <string name="settings_manual">Manual</string>
     <string name="settings_manual_summary">Visit GitHub wiki page.</string>
     <string name="settings_allow_dynamic_rule_reload">Allow dynamic rule reload</string>
+    <string name="settings_debug_output">Debug output</string>
 
     <string name="settings_rule_name">Rule Name</string>
     <string name="settings_rule_type">Rule Type</string>
diff --git a/app/src/main/res/xml/perf_settings.xml b/app/src/main/res/xml/perf_settings.xml
index e31b29a..b64e74f 100644
--- a/app/src/main/res/xml/perf_settings.xml
+++ b/app/src/main/res/xml/perf_settings.xml
@@ -71,6 +71,11 @@
                 android:title="@string/settings_dns_over_tcp"
                 android:defaultValue="false"
                 android:enabled="false"/>
+        <SwitchPreference
+                android:key="settings_debug_output"
+                android:title="@string/settings_debug_output"
+                android:defaultValue="false"
+                android:enabled="false"/>
     </PreferenceCategory>
 
     <PreferenceCategory