diff --git a/lib_common/src/main/java/gov/anzong/androidnga/common/PreferenceKey.java b/lib_common/src/main/java/gov/anzong/androidnga/common/PreferenceKey.java
index c560b9845..afa187cd8 100644
--- a/lib_common/src/main/java/gov/anzong/androidnga/common/PreferenceKey.java
+++ b/lib_common/src/main/java/gov/anzong/androidnga/common/PreferenceKey.java
@@ -44,6 +44,8 @@ public class PreferenceKey {
 
     public static final String BOOKMARK_BOARD = "bookmark_board";
 
+    public static final String CHECK_IN_LAST_TIME = "check_in_last_time";
+
     public static final String USER_ACTIVE_INDEX = "user_active_index";
 
     public static final String SORT_BY_POST = "sort_by_post";
diff --git a/nga_phone_base_3.0/src/main/java/gov/anzong/androidnga/NgaClientApp.java b/nga_phone_base_3.0/src/main/java/gov/anzong/androidnga/NgaClientApp.java
index 0b96b08b0..b80e2a833 100644
--- a/nga_phone_base_3.0/src/main/java/gov/anzong/androidnga/NgaClientApp.java
+++ b/nga_phone_base_3.0/src/main/java/gov/anzong/androidnga/NgaClientApp.java
@@ -16,12 +16,14 @@
 import gov.anzong.androidnga.base.util.ContextUtils;
 import gov.anzong.androidnga.base.util.PreferenceUtils;
 import gov.anzong.androidnga.base.util.ThreadUtils;
+import gov.anzong.androidnga.base.util.ToastUtils;
 import gov.anzong.androidnga.common.PreferenceKey;
 import gov.anzong.androidnga.common.util.ReflectUtils;
 import gov.anzong.androidnga.db.AppDatabase;
 import sp.phone.common.FilterKeywordsManagerImpl;
 import sp.phone.common.UserManagerImpl;
 import sp.phone.common.VersionUpgradeHelper;
+import sp.phone.task.CheckInTask;
 
 public class NgaClientApp extends Application {
 
@@ -39,6 +41,7 @@ public void onCreate() {
         AppDatabase.init(this);
         initCoreModule();
         initRouter();
+        checkIn();
         super.onCreate();
 
         // fixWebViewMultiProcessException();
@@ -62,7 +65,7 @@ private void fixWebViewMultiProcessException() {
             if (dirs != null) {
                 for (File dir : dirs) {
                     if (dir.getName().contains("webview")) {
-                        if (!dir.getName().contains("webview_" + ppid)){
+                        if (!dir.getName().contains("webview_" + ppid)) {
                             ThreadUtils.postOnSubThread(() -> {
                                 try {
                                     FileUtils.deleteDirectory(dir);
@@ -109,6 +112,10 @@ private void checkNewVersion() {
         }
     }
 
+    private void checkIn() {
+        CheckInTask.execute();
+    }
+
     public static boolean isNewVersion() {
         return sNewVersion;
     }
diff --git a/nga_phone_base_3.0/src/main/java/sp/phone/http/retrofit/RetrofitHelper.java b/nga_phone_base_3.0/src/main/java/sp/phone/http/retrofit/RetrofitHelper.java
index a3af04132..95d5238df 100644
--- a/nga_phone_base_3.0/src/main/java/sp/phone/http/retrofit/RetrofitHelper.java
+++ b/nga_phone_base_3.0/src/main/java/sp/phone/http/retrofit/RetrofitHelper.java
@@ -105,6 +105,7 @@ public OkHttpClient.Builder createOkHttpClientBuilder() {
             Request request = original.newBuilder()
                     .header("Cookie", cookie)
                     .header("User-Agent", mUserAgent)
+                    .header("X-User-Agent", "Nga_Official")
                     .method(original.method(), original.body())
                     .build();
             return chain.proceed(request);
diff --git a/nga_phone_base_3.0/src/main/java/sp/phone/task/CheckInTask.java b/nga_phone_base_3.0/src/main/java/sp/phone/task/CheckInTask.java
new file mode 100644
index 000000000..d5c96d3a2
--- /dev/null
+++ b/nga_phone_base_3.0/src/main/java/sp/phone/task/CheckInTask.java
@@ -0,0 +1,50 @@
+package sp.phone.task;
+
+import static sp.phone.util.ActivityUtils.showToast;
+
+import java.util.Calendar;
+import java.util.Date;
+
+import gov.anzong.androidnga.Utils;
+import gov.anzong.androidnga.base.util.PreferenceUtils;
+import gov.anzong.androidnga.common.PreferenceKey;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.schedulers.Schedulers;
+import sp.phone.http.retrofit.RetrofitHelper;
+import sp.phone.http.retrofit.RetrofitService;
+import sp.phone.rxjava.BaseSubscriber;
+import sp.phone.util.StringUtils;
+
+/**
+ * 签到
+ * Created by mlzzen on 2023/7/7.
+ */
+public class CheckInTask {
+    private static final String url = Utils.getNGAHost() + "nuke.php?__lib=check_in&__act=check_in&lite=js";
+
+    public static void execute() {
+        Calendar cal1 = Calendar.getInstance();
+        Calendar cal2 = Calendar.getInstance();
+        long checkInLastTime = PreferenceUtils.getData(PreferenceKey.CHECK_IN_LAST_TIME, new Date().getTime() - 24 * 3600 * 1000);
+        cal1.setTime(new Date(checkInLastTime));
+        cal2.setTime(new Date());
+        if (cal1.get(Calendar.DAY_OF_YEAR) != cal2.get(Calendar.DAY_OF_YEAR)) {
+            RetrofitService service = RetrofitHelper.getInstance().getService();
+            service.post(url)
+                    .subscribeOn(Schedulers.io())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe(new BaseSubscriber<String>() {
+                        @Override
+                        public void onNext(String result) {
+                            String msg = StringUtils.getStringBetween(result, 0, "{\"0\":\"", "\"},\"time\"").result;
+                            if (msg.indexOf("签到成功") != -1) {
+                                showToast("签到成功");
+                            }
+                            if (msg.indexOf("签到成功") != -1 || msg.indexOf("今天已经签到") != -1) {
+                                PreferenceUtils.putData(PreferenceKey.CHECK_IN_LAST_TIME, new Date().getTime());
+                            }
+                        }
+                    });
+        }
+    }
+}