diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index dba98b543..cecc04890 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.27.2",
+    "version": "2.27.3",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/model/document.ts b/packages/hydrooj/src/model/document.ts
index c315dd14a..afb9028c4 100644
--- a/packages/hydrooj/src/model/document.ts
+++ b/packages/hydrooj/src/model/document.ts
@@ -428,6 +428,11 @@ async function ensureIndexes() {
 }
 
 bus.once('app/started', ensureIndexes);
+bus.on('domain/delete', (domainId) => Promise.all([
+    coll.deleteMany({ domainId }),
+    collStatus.deleteMany({ domainId }),
+]));
+
 global.Hydro.model.document = {
     coll,
     collStatus,
diff --git a/packages/hydrooj/src/model/domain.ts b/packages/hydrooj/src/model/domain.ts
index 4205ea7ee..be86e4361 100644
--- a/packages/hydrooj/src/model/domain.ts
+++ b/packages/hydrooj/src/model/domain.ts
@@ -249,6 +249,13 @@ class DomainModel {
         }).limit(limit).toArray();
         return ddocs;
     }
+
+    @ArgMethod
+    static async del(domainId: string) {
+        await coll.deleteOne({ _id: domainId });
+        await collUser.deleteMany({ domainId });
+        await bus.parallel('domain/delete', domainId);
+    }
 }
 
 export default DomainModel;
diff --git a/packages/hydrooj/src/model/record.ts b/packages/hydrooj/src/model/record.ts
index 8aa783537..57bfd83ac 100644
--- a/packages/hydrooj/src/model/record.ts
+++ b/packages/hydrooj/src/model/record.ts
@@ -208,5 +208,7 @@ class RecordModel {
 }
 
 bus.on('problem/delete', (domainId, docId) => RecordModel.coll.deleteMany({ domainId, pid: docId }));
+bus.on('domain/delete', (domainId) => RecordModel.coll.deleteMany({ domainId }));
+
 export default RecordModel;
 global.Hydro.model.record = RecordModel;
diff --git a/packages/hydrooj/src/model/storage.ts b/packages/hydrooj/src/model/storage.ts
index 78e393250..3fcc7b051 100644
--- a/packages/hydrooj/src/model/storage.ts
+++ b/packages/hydrooj/src/model/storage.ts
@@ -97,6 +97,10 @@ bus.once('app/started', async () => {
         });
     }
 });
+bus.on('domain/delete', async (domainId) => {
+    const files = await StorageModel.list(`problem/${domainId}`);
+    await StorageModel.del(files.map((i) => i.path));
+});
 
 global.Hydro.model.storage = StorageModel;
 export default StorageModel;
diff --git a/packages/hydrooj/src/model/task.ts b/packages/hydrooj/src/model/task.ts
index d473dcd92..3f9de7e4d 100644
--- a/packages/hydrooj/src/model/task.ts
+++ b/packages/hydrooj/src/model/task.ts
@@ -127,5 +127,7 @@ class TaskModel {
     static Worker = Worker;
 }
 
+bus.on('domain/delete', (domainId) => coll.deleteMany({ domainId }));
+
 export default TaskModel;
 global.Hydro.model.task = TaskModel;
diff --git a/packages/hydrooj/src/service/bus.ts b/packages/hydrooj/src/service/bus.ts
index 718cf44b2..175d640fc 100644
--- a/packages/hydrooj/src/service/bus.ts
+++ b/packages/hydrooj/src/service/bus.ts
@@ -55,6 +55,7 @@ export interface EventMap extends Record<string, any> {
     'domain/get': (ddoc: DomainDoc) => VoidReturn
     'domain/before-update': (domainId: string, $set: Partial<DomainDoc>) => VoidReturn
     'domain/update': (domainId: string, $set: Partial<DomainDoc>, ddoc: DomainDoc) => VoidReturn
+    'domain/delete': (domainId: string) => VoidReturn
 
     'document/add': (doc: any) => VoidReturn
     'document/set': <T extends keyof DocType>(
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 67469558a..cd427354c 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.9.1",
+  "version": "4.9.2",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",