diff --git a/app/src/main/java/org/itxtech/daedalus/fragment/DnsServerConfigFragment.java b/app/src/main/java/org/itxtech/daedalus/fragment/DnsServerConfigFragment.java
index d7ad6fe..41dbc80 100644
--- a/app/src/main/java/org/itxtech/daedalus/fragment/DnsServerConfigFragment.java
+++ b/app/src/main/java/org/itxtech/daedalus/fragment/DnsServerConfigFragment.java
@@ -1,5 +1,7 @@
 package org.itxtech.daedalus.fragment;
 
+import android.app.AlertDialog;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.preference.EditTextPreference;
@@ -130,9 +132,21 @@ public class DnsServerConfigFragment extends PreferenceFragment implements Toolb
                 break;
             case R.id.action_delete:
                 if (index != DnsServerConfigActivity.CUSTOM_DNS_SERVER_ID_NONE) {
-                    Daedalus.configurations.getCustomDnsServers().remove(index);
+                    new AlertDialog.Builder(getActivity())
+                            .setTitle(R.string.notice_delete_confirm_prompt)
+                            .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
+                                @Override
+                                public void onClick(DialogInterface dialog, int which) {
+                                    Daedalus.configurations.getCustomDnsServers().remove(index);
+                                    getActivity().finish();
+                                }
+                            })
+                            .setNegativeButton(R.string.no, null)
+                            .create()
+                            .show();
+                } else {
+                    getActivity().finish();
                 }
-                getActivity().finish();
                 break;
         }
 
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 1faed48..6568c06 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -68,4 +68,7 @@
     <string name="settings_use_dnsmasq">使用 DNSMasq 替代 Hosts</string>
     <string name="button_text_download_dnsmasq">下载 DNSMasq 配置文件</string>
     <string name="dnsmasq_path">本地 DNSMasq 配置路径:</string>
+    <string name="notice_delete_confirm_prompt">您确定要删除此 DNS 服务器？</string>
+    <string name="yes">是</string>
+    <string name="no">否</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4d29dbd..e440a8c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -68,4 +68,7 @@
     <string name="settings_use_dnsmasq">Use DNSMasq instead of Hosts</string>
     <string name="button_text_download_dnsmasq">Download DNSMasq configuration</string>
     <string name="dnsmasq_path">Local DNSMasq configurations path:</string>
+    <string name="notice_delete_confirm_prompt">Are you sure you want to remove this DNS server?</string>
+    <string name="yes">Yes</string>
+    <string name="no">No</string>
 </resources>