diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/ProtobufRequest.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/ProtobufRequest.kt
index 8fbac0f5..f0689d4d 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/api/ProtobufRequest.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/ProtobufRequest.kt
@@ -63,33 +63,54 @@ fun buildAppPosInfo(): AppPosInfo {
 fun buildCommonRequest(
     context: Context = App.INSTANCE,
     clientVersion: ClientVersion = ClientVersion.TIEBA_V11
-): CommonRequest = buildCommonRequest(context, clientVersion.version)
+): CommonRequest = when (clientVersion) {
+    ClientVersion.TIEBA_V11 ->
+        CommonRequest(
+            BDUSS = AccountUtil.getBduss(),
+            _client_id = ClientUtils.clientId ?: RetrofitTiebaApi.randomClientId,
+            _client_type = 2,
+            _client_version = clientVersion.version,
+            _os_version = "${Build.VERSION.SDK_INT}",
+            _phone_imei = MobileInfoUtil.getIMEI(context),
+            _timestamp = System.currentTimeMillis(),
+            brand = Build.BRAND,
+            c3_aid = UIDUtil.getAid(),
+            cuid = CuidUtils.getNewCuid(),
+            cuid_galaxy2 = CuidUtils.getNewCuid(),
+            cuid_gid = "",
+            from = "1024324o",
+            is_teenager = 0,
+            lego_lib_version = "3.0.0",
+            model = Build.MODEL,
+            net_type = "1",
+            oaid = OAID().toJson(),
+            pversion = "1.0.3",
+            sample_id = ClientUtils.sampleId,
+            stoken = AccountUtil.getSToken(),
+        )
 
-fun buildCommonRequest(
-    context: Context = App.INSTANCE,
-    clientVersion: String,
-): CommonRequest {
-    return CommonRequest(
-        BDUSS = AccountUtil.getBduss(),
-        _client_id = ClientUtils.clientId ?: RetrofitTiebaApi.randomClientId,
-        _client_type = 2,
-        _client_version = clientVersion,
-        _os_version = "${Build.VERSION.SDK_INT}",
-        _phone_imei = MobileInfoUtil.getIMEI(context),
-        _timestamp = System.currentTimeMillis(),
-        brand = Build.BRAND,
-        c3_aid = UIDUtil.getAid(),
-        cuid = CuidUtils.getNewCuid(),
-        cuid_galaxy2 = CuidUtils.getNewCuid(),
-        cuid_gid = "",
-        from = "1024324o",
-        is_teenager = 0,
-        lego_lib_version = "3.0.0",
-        model = Build.MODEL,
-        net_type = "1",
-        oaid = OAID().toJson(),
-        pversion = "1.0.3",
-        sample_id = ClientUtils.sampleId,
-        stoken = AccountUtil.getSToken(),
-    )
+    ClientVersion.TIEBA_V12 ->
+        CommonRequest(
+            BDUSS = AccountUtil.getBduss(),
+            _client_id = ClientUtils.clientId ?: RetrofitTiebaApi.randomClientId,
+            _client_type = 2,
+            _client_version = clientVersion.version,
+            _os_version = "${Build.VERSION.SDK_INT}",
+            _phone_imei = MobileInfoUtil.getIMEI(context),
+            _timestamp = System.currentTimeMillis(),
+            brand = Build.BRAND,
+            c3_aid = UIDUtil.getAid(),
+            cuid = CuidUtils.getNewCuid(),
+            cuid_galaxy2 = CuidUtils.getNewCuid(),
+            cuid_gid = "",
+            from = "1024324o",
+            is_teenager = 0,
+            lego_lib_version = "3.0.0",
+            model = Build.MODEL,
+            net_type = "1",
+            oaid = UIDUtil.getOAID(),
+            pversion = "1.0.3",
+            sample_id = ClientUtils.sampleId,
+            stoken = AccountUtil.getSToken(),
+        )
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/ITiebaApi.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/ITiebaApi.kt
index 64d8f308..f9edd12e 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/ITiebaApi.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/ITiebaApi.kt
@@ -7,6 +7,7 @@ import com.huanchengfly.tieba.post.api.models.*
 import com.huanchengfly.tieba.post.api.models.protos.forumRecommend.ForumRecommendResponse
 import com.huanchengfly.tieba.post.api.models.protos.frsPage.FrsPageResponse
 import com.huanchengfly.tieba.post.api.models.protos.hotThreadList.HotThreadListResponse
+import com.huanchengfly.tieba.post.api.models.protos.pbPage.PbPageResponse
 import com.huanchengfly.tieba.post.api.models.protos.personalized.PersonalizedResponse
 import com.huanchengfly.tieba.post.api.models.protos.profile.ProfileResponse
 import com.huanchengfly.tieba.post.api.models.protos.threadList.ThreadListResponse
@@ -1225,4 +1226,16 @@ interface ITiebaApi {
     fun userProfileFlow(
         uid: Long
     ): Flow<ProfileResponse>
+
+    /**
+     * 贴子页（Flow）
+     *
+     * @param threadId 贴子 ID
+     */
+    fun pbPageFlow(
+        threadId: Long,
+        page: Int,
+        sortType: Int = 0,
+        forumId: Long? = null,
+    ): Flow<PbPageResponse>
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/impls/MixedTiebaApiImpl.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/impls/MixedTiebaApiImpl.kt
index 942ac167..4b28dae3 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/impls/MixedTiebaApiImpl.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/interfaces/impls/MixedTiebaApiImpl.kt
@@ -1005,4 +1005,62 @@ object MixedTiebaApiImpl : ITiebaApi {
             )
         )
     }
+
+    override fun pbPageFlow(
+        threadId: Long,
+        page: Int,
+        sortType: Int,
+        forumId: Long?
+    ): Flow<PbPageResponse> {
+        return RetrofitTiebaApi.OFFICIAL_PROTOBUF_TIEBA_V12_API.pbPageFlow(
+            buildProtobufRequestBody(
+                PbPageRequest(
+                    PbPageRequestData(
+                        common = buildCommonRequest(clientVersion = ClientVersion.TIEBA_V12),
+                        kz = threadId,
+                        ad_param = com.huanchengfly.tieba.post.api.models.protos.pbPage.AdParam(
+                            load_count = 0,
+                            refresh_count = 1,
+                            is_req_ad = 1
+                        ),
+                        app_pos = buildAppPosInfo(),
+                        back = 0,
+                        banner = 1,
+                        broadcast_id = 0,
+                        floor_rn = 4,
+                        floor_sort_type = 1,
+                        forum_id = forumId ?: 0,
+                        from_push = 0,
+                        from_smart_frs = 0,
+                        immersion_video_comment_source = 0,
+                        is_comm_reverse = 0,
+                        is_fold_comment_req = 0,
+                        is_jumpfloor = 0,
+                        jumpfloor_num = 0,
+                        need_repost_recommend_forum = 0,
+                        obj_locate = "",
+                        obj_param1 = "2",
+                        obj_source = "",
+                        ori_ugc_type = 0,
+                        pb_rn = 0,
+                        pid = 0,
+                        pn = page,
+                        q_type = 1,
+                        r = sortType,
+                        rn = 15,
+                        s_model = 0,
+                        scr_dip = App.ScreenInfo.DENSITY.toDouble(),
+                        scr_h = getScreenHeight(),
+                        scr_w = getScreenWidth(),
+                        source_type = 2,
+                        st_type = "personalize_page",
+                        thread_type = 0,
+                        weipost = 0,
+                        with_floor = 1
+                    )
+                ),
+                clientVersion = ClientVersion.TIEBA_V12
+            )
+        )
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interfaces/OfficialProtobufTiebaApi.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interfaces/OfficialProtobufTiebaApi.kt
index 2cc52b1b..95cbe1e1 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interfaces/OfficialProtobufTiebaApi.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interfaces/OfficialProtobufTiebaApi.kt
@@ -3,6 +3,7 @@ package com.huanchengfly.tieba.post.api.retrofit.interfaces
 import com.huanchengfly.tieba.post.api.models.protos.forumRecommend.ForumRecommendResponse
 import com.huanchengfly.tieba.post.api.models.protos.frsPage.FrsPageResponse
 import com.huanchengfly.tieba.post.api.models.protos.hotThreadList.HotThreadListResponse
+import com.huanchengfly.tieba.post.api.models.protos.pbPage.PbPageResponse
 import com.huanchengfly.tieba.post.api.models.protos.personalized.PersonalizedResponse
 import com.huanchengfly.tieba.post.api.models.protos.profile.ProfileResponse
 import com.huanchengfly.tieba.post.api.models.protos.threadList.ThreadListResponse
@@ -53,4 +54,9 @@ interface OfficialProtobufTiebaApi {
     fun profileFlow(
         @Body body: MyMultipartBody,
     ): Flow<ProfileResponse>
+
+    @POST("/c/f/pb/page?cmd=302001&format=protobuf")
+    fun pbPageFlow(
+        @Body body: MyMultipartBody,
+    ): Flow<PbPageResponse>
 }
\ No newline at end of file
diff --git a/app/src/main/protos/PbPage/AdParam.proto b/app/src/main/protos/PbPage/AdParam.proto
index 7823c754..2266335f 100644
--- a/app/src/main/protos/PbPage/AdParam.proto
+++ b/app/src/main/protos/PbPage/AdParam.proto
@@ -5,7 +5,7 @@ package tieba.pbPage;
 option java_package = "com.huanchengfly.tieba.post.api.models.protos.pbPage";
 
 message AdParam {
-  int32 load_count = 1;
+  optional int32 load_count = 1;
   int32 refresh_count = 2;
   string yoga_lib_version = 3;
   int32 is_req_ad = 4;
diff --git a/app/src/main/protos/PbPage/PbPageRequestData.proto b/app/src/main/protos/PbPage/PbPageRequestData.proto
index ac3ddc98..4ef5e005 100644
--- a/app/src/main/protos/PbPage/PbPageRequestData.proto
+++ b/app/src/main/protos/PbPage/PbPageRequestData.proto
@@ -10,18 +10,18 @@ import "CommonRequest.proto";
 import "PbPage/AdParam.proto";
 
 message PbPageRequestData {
-  int32 pb_rn = 1;
+  optional int32 pb_rn = 1;
   int32 mark = 2;
-  int32 back = 3;
+  optional int32 back = 3;
   int64 kz = 4;
   int32 lz = 5;
-  int32 r = 6;
-  int64 pid = 7;
+  optional int32 r = 6;
+  optional int64 pid = 7;
   int32 with_floor = 8;
   int32 floor_rn = 9;
-  int32 weipost = 10;
+  optional int32 weipost = 10;
   int32 message_id = 11;
-  int32 s_model = 12;
+  optional int32 s_model = 12;
   int32 rn = 13;
   int32 scr_w = 14;
   int32 scr_h = 15;
@@ -29,7 +29,7 @@ message PbPageRequestData {
   int32 q_type = 17;
   int32 pn = 18;
   string st_type = 19;
-  int32 thread_type = 20;
+  optional int32 thread_type = 20;
   int32 banner = 21;
   int32 arround = 22;
   int32 last = 23;
@@ -42,9 +42,9 @@ message PbPageRequestData {
   int64 st_task = 30;
   int32 issdk = 31;
   string query_word = 32;
-  int32 is_comm_reverse = 33;
-  int32 is_jumpfloor = 34;
-  int32 jumpfloor_num = 35;
+  optional int32 is_comm_reverse = 33;
+  optional int32 is_jumpfloor = 34;
+  optional int32 jumpfloor_num = 35;
   string da_idfa = 42;
   string platform = 43;
   uint64 jid = 44;
@@ -52,31 +52,31 @@ message PbPageRequestData {
   string jfrom = 46;
   string yuelaou_locate = 47;
   string yuelaou_params = 48;
-  string obj_source = 50;
-  string obj_locate = 51;
-  string obj_param1 = 52;
+  optional string obj_source = 50;
+  optional string obj_locate = 51;
+  optional string obj_param1 = 52;
   AppPosInfo app_pos = 53;
-  uint32 from_smart_frs = 54;
+  optional uint32 from_smart_frs = 54;
   string feed_nid = 55;
-  int64 forum_id = 56;
-  int32 need_repost_recommend_forum = 57;
+  optional int64 forum_id = 56;
+  optional int32 need_repost_recommend_forum = 57;
   AdParam ad_param = 58;
   int32 need_log = 59;
   string call_url = 60;
   string shoubai_cuid = 61;
   string ori_ugc_nid = 62;
   string ori_ugc_tid = 63;
-  int32 ori_ugc_type = 65;
+  optional int32 ori_ugc_type = 65;
   string ori_ugc_vid = 66;
   string ad_context_list = 68;
   string up_schema = 69;
-  int32 from_push = 71;
+  optional int32 from_push = 71;
   string ad_ext_params = 72;
-  int64 broadcast_id = 73;
+  optional int64 broadcast_id = 73;
   int32 floor_sort_type = 74;
   int32 source_type = 75;
-  int32 immersion_video_comment_source = 76;
+  optional int32 immersion_video_comment_source = 76;
   AppTransmitData app_transmit_data = 77;
-  int32 is_fold_comment_req = 78;
+  optional int32 is_fold_comment_req = 78;
   int32 is_edit_comment_req = 79;
 }