diff --git a/ets2panda/checker/ETSAnalyzer.cpp b/ets2panda/checker/ETSAnalyzer.cpp
index 1c1b999761d401bf84758bf6c09817102149345b..2c5b418b0b4a78819c8d4c1e94a13209ba5d49c3 100644
--- a/ets2panda/checker/ETSAnalyzer.cpp
+++ b/ets2panda/checker/ETSAnalyzer.cpp
@@ -958,6 +958,15 @@ static Type *GetAppropriatePreferredType(Type *originalType, std::function<bool(
         return originalType;
     }
 
+    if (originalType->IsETSAsyncFuncReturnType() &&
+        originalType->AsETSAsyncFuncReturnType()->GetPromiseTypeArg()->IsETSObjectType() &&
+        predicate(
+            originalType->AsETSAsyncFuncReturnType()->GetPromiseTypeArg()->AsETSObjectType()->GetOriginalBaseType())) {
+        return GetAppropriatePreferredType(
+            originalType->AsETSAsyncFuncReturnType()->GetPromiseTypeArg()->AsETSObjectType()->GetOriginalBaseType(),
+            predicate);
+    }
+
     if (!originalType->IsETSUnionType()) {
         return nullptr;
     }
diff --git a/ets2panda/test/ast/compiler/ets/async_return_type.ets b/ets2panda/test/ast/compiler/ets/async_return_type.ets
new file mode 100644
index 0000000000000000000000000000000000000000..c49f738a408ce8542578a81dd90afd42028308c0
--- /dev/null
+++ b/ets2panda/test/ast/compiler/ets/async_return_type.ets
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+async function test(): Promise<number> {
+    const n1: number = 1;
+    return n1;
+};
+
+const testLambda = async (): Promise<number> => {
+    const n1: number = 2;
+    return n1;
+};
+
+async function test1(): Promise<double> {
+    const n1: double = 1;
+    return n1;
+};
+
+const testLambda1 = async (): Promise<double> => {
+    const n1: double = 2;
+    return n1;
+};
+
+async function test2(): Promise<number> {
+    const n1: double = 1;
+    return n1;
+};
+
+const testLambda2 = async (): Promise<number> => {
+    const n1: double = 2;
+    return n1;
+};
+