diff --git a/lib/bootstrapper.dart b/lib/bootstrapper.dart
index 038bb57..13950bb 100644
--- a/lib/bootstrapper.dart
+++ b/lib/bootstrapper.dart
@@ -5,6 +5,7 @@ import 'package:provider/provider.dart';
 import 'package:solian/exts.dart';
 import 'package:solian/providers/auth.dart';
 import 'package:solian/providers/content/channel.dart';
+import 'package:solian/providers/content/realm.dart';
 import 'package:solian/providers/relation.dart';
 import 'package:solian/providers/theme_switcher.dart';
 import 'package:solian/providers/websocket.dart';
@@ -82,6 +83,7 @@ class _BootstrapperShellState extends State<BootstrapperShell> {
         final AuthProvider auth = Get.find();
         if (auth.isAuthorized.isTrue) {
           await Future.wait([
+            Get.find<RealmProvider>().refreshAvailableRealms(),
             Get.find<ChannelProvider>().refreshAvailableChannel(),
             Get.find<RelationshipProvider>().refreshFriendList(),
           ]);
diff --git a/lib/controllers/post_editor_controller.dart b/lib/controllers/post_editor_controller.dart
index 4bcaf5e..b345bd8 100644
--- a/lib/controllers/post_editor_controller.dart
+++ b/lib/controllers/post_editor_controller.dart
@@ -8,6 +8,7 @@ import 'package:solian/models/realm.dart';
 import 'package:solian/widgets/attachments/attachment_editor.dart';
 import 'package:solian/widgets/posts/editor/post_editor_categories_tags.dart';
 import 'package:solian/widgets/posts/editor/post_editor_overview.dart';
+import 'package:solian/widgets/posts/editor/post_editor_publish_zone.dart';
 import 'package:solian/widgets/posts/editor/post_editor_visibility.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -88,6 +89,15 @@ class PostEditorController extends GetxController {
     );
   }
 
+  Future<void> editPublishZone(BuildContext context) {
+    return showDialog(
+      context: context,
+      builder: (context) => PostEditorPublishZoneDialog(
+        controller: this,
+      ),
+    );
+  }
+
   Future<void> editAttachment(BuildContext context) {
     return showModalBottomSheet(
       context: context,
diff --git a/lib/providers/content/realm.dart b/lib/providers/content/realm.dart
index 96cc5dc..9432e57 100644
--- a/lib/providers/content/realm.dart
+++ b/lib/providers/content/realm.dart
@@ -1,7 +1,24 @@
 import 'package:get/get.dart';
+import 'package:solian/models/realm.dart';
 import 'package:solian/providers/auth.dart';
 
 class RealmProvider extends GetxController {
+  RxBool isLoading = false.obs;
+  RxList<Realm> availableRealms = RxList.empty(growable: true);
+
+  Future<void> refreshAvailableRealms() async {
+    final AuthProvider auth = Get.find();
+    if (auth.isAuthorized.isFalse) throw Exception('unauthorized');
+
+    isLoading.value = true;
+    final resp = await listAvailableRealm();
+    isLoading.value = false;
+
+    availableRealms.value =
+        resp.body.map((x) => Realm.fromJson(x)).toList().cast<Realm>();
+    availableRealms.refresh();
+  }
+
   Future<Response> getRealm(String alias) async {
     final AuthProvider auth = Get.find();
     if (auth.isAuthorized.isFalse) throw Exception('unauthorized');
diff --git a/lib/screens/posts/post_editor.dart b/lib/screens/posts/post_editor.dart
index 44b513d..0a37e73 100644
--- a/lib/screens/posts/post_editor.dart
+++ b/lib/screens/posts/post_editor.dart
@@ -87,6 +87,9 @@ class _PostPublishScreenState extends State<PostPublishScreen> {
     if (widget.edit != null) {
       _editorController.editTarget = widget.edit;
     }
+    if (widget.realm != null) {
+      _editorController.realmZone.value = widget.realm;
+    }
   }
 
   void cancelAction() {
@@ -220,18 +223,6 @@ class _PostPublishScreenState extends State<PostPublishScreen> {
                 children: [
                   if (_isBusy)
                     const LinearProgressIndicator().animate().scaleX(),
-                  if (_realm != null)
-                    MaterialBanner(
-                      leading: const Icon(Icons.group),
-                      leadingPadding:
-                          const EdgeInsets.only(left: 10, right: 20),
-                      dividerColor: Colors.transparent,
-                      content: Text(
-                        'postInRealmNotify'
-                            .trParams({'realm': '#${_realm!.alias}'}),
-                      ),
-                      actions: notifyBannerActions,
-                    ),
                   Container(
                     padding: const EdgeInsets.symmetric(
                       horizontal: 16,
@@ -410,6 +401,23 @@ class _PostPublishScreenState extends State<PostPublishScreen> {
                             _editorController.editCategoriesAndTags(context);
                           },
                         ),
+                        IconButton(
+                          icon: Obx(() {
+                            return badges.Badge(
+                              showBadge:
+                                  _editorController.realmZone.value != null,
+                              position: badges.BadgePosition.topEnd(
+                                top: -4,
+                                end: -6,
+                              ),
+                              child: const Icon(Icons.workspaces),
+                            );
+                          }),
+                          color: Theme.of(context).colorScheme.primary,
+                          onPressed: () {
+                            _editorController.editPublishZone(context);
+                          },
+                        ),
                         MarkdownToolbar(
                           hideImage: true,
                           useIncludedTextField: false,
diff --git a/lib/translations/en_us.dart b/lib/translations/en_us.dart
index 2a8775c..d6e29f9 100644
--- a/lib/translations/en_us.dart
+++ b/lib/translations/en_us.dart
@@ -101,6 +101,8 @@ const i18nEnglish = {
   'postRestoreFromLocal': 'Restore from local',
   'postAutoSaveAt': 'Auto saved at @date',
   'postCategoriesAndTags': 'Categories n\' Tags',
+  'postPublishZone': 'Publish Zone',
+  'postPublishZoneNone': 'None',
   'postVisibility': 'Visibility',
   'postVisibilityAll': 'Everyone',
   'postVisibilityFriends': 'Friends',
diff --git a/lib/translations/zh_cn.dart b/lib/translations/zh_cn.dart
index 49cd2f8..a074f65 100644
--- a/lib/translations/zh_cn.dart
+++ b/lib/translations/zh_cn.dart
@@ -95,6 +95,8 @@ const i18nSimplifiedChinese = {
   'postRestoreFromLocal': '内容从本地暂存回复',
   'postAutoSaveAt': '已自动保存于 @date',
   'postCategoriesAndTags': '分类与标签',
+  'postPublishZone': '帖子发布区',
+  'postPublishZoneNone': '无所属领域',
   'postVisibility': '帖子可见性',
   'postVisibilityAll': '所有人可见',
   'postVisibilityFriends': '仅好友可见',
diff --git a/lib/widgets/posts/editor/post_editor_publish_zone.dart b/lib/widgets/posts/editor/post_editor_publish_zone.dart
new file mode 100644
index 0000000..3f30ed1
--- /dev/null
+++ b/lib/widgets/posts/editor/post_editor_publish_zone.dart
@@ -0,0 +1,70 @@
+import 'package:dropdown_button2/dropdown_button2.dart';
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:solian/controllers/post_editor_controller.dart';
+import 'package:solian/providers/content/realm.dart';
+
+class PostEditorPublishZoneDialog extends StatelessWidget {
+  final PostEditorController controller;
+
+  const PostEditorPublishZoneDialog({super.key, required this.controller});
+
+  @override
+  Widget build(BuildContext context) {
+    final RealmProvider realms = Get.find();
+
+    return AlertDialog(
+      title: Text('postPublishZone'.tr),
+      content: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Obx(() {
+            return DropdownButtonFormField2<int>(
+              isExpanded: true,
+              decoration: const InputDecoration(
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.all(Radius.circular(8)),
+                ),
+              ),
+              items: [
+                DropdownMenuItem<int>(
+                  value: null,
+                  child: Text(
+                    'postPublishZoneNone'.tr,
+                    style: const TextStyle(fontSize: 14),
+                  ),
+                ),
+                ...realms.availableRealms.map(
+                  (x) => DropdownMenuItem<int>(
+                    value: x.id,
+                    child: Text(
+                      '${x.name} (${x.alias})',
+                      style: const TextStyle(fontSize: 14),
+                    ),
+                  ),
+                ),
+              ],
+              value: controller.realmZone.value?.id,
+              onChanged: (int? value) {
+                if (value == null) {
+                  controller.realmZone.value = null;
+                } else {
+                  controller.realmZone.value =
+                      realms.availableRealms.firstWhere((x) => x.id == value);
+                }
+              },
+              buttonStyleData: const ButtonStyleData(height: 20),
+              menuItemStyleData: const MenuItemStyleData(height: 40),
+            );
+          }),
+        ],
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.pop(context),
+          child: Text('confirm'.tr),
+        ),
+      ],
+    );
+  }
+}