diff --git a/ets2panda/checker/types/ets/etsObjectType.cpp b/ets2panda/checker/types/ets/etsObjectType.cpp
index 733f658a5321354fffcb92de928c42ad72af4540..e06913625c3ec8578bde3505b02d057a18f91179 100644
--- a/ets2panda/checker/types/ets/etsObjectType.cpp
+++ b/ets2panda/checker/types/ets/etsObjectType.cpp
@@ -1336,8 +1336,29 @@ void ETSObjectType::CheckVarianceRecursively(TypeRelation *relation, VarianceFla
         return;
     }
 
-    auto *params = GetDeclNode()->IsClassDefinition() ? GetDeclNode()->AsClassDefinition()->TypeParams()
-                                                      : GetDeclNode()->AsTSInterfaceDeclaration()->TypeParams();
+    // according to the spec(GENERICS chapter), only class/interface/function/
+    // method/lambda and type alias can have type parameters. since
+    // 1. the type of function and method is ETSFunctionType
+    // 2. lambda has been checked above
+    // here we just need check
+    // 1. class
+    // 2. interface
+    // 3. type alias(which will be redirected to its real type)
+    // And all of them should have declarations
+    if (declNode_ == nullptr) {
+        // If the type is not declared, then we do not need to check variance.
+        return;
+    }
+    ir::TSTypeParameterDeclaration *params;
+    if (GetDeclNode()->IsClassDefinition()) {
+        params = GetDeclNode()->AsClassDefinition()->TypeParams();
+    } else if (GetDeclNode()->IsTSInterfaceDeclaration()) {
+        params = GetDeclNode()->AsTSInterfaceDeclaration()->TypeParams();
+    } else {
+        // If the type is not a class or interface or type alias, then we do not need to check variance.
+        return;
+    }
+
     if (params == nullptr) {
         return;
     }
diff --git a/ets2panda/test/ast/compiler/ets/check_variance_crash.ets b/ets2panda/test/ast/compiler/ets/check_variance_crash.ets
new file mode 100644
index 0000000000000000000000000000000000000000..f5bfa6f4682b1990f5da896ba55be3b2b898e6dd
--- /dev/null
+++ b/ets2panda/test/ast/compiler/ets/check_variance_crash.ets
@@ -0,0 +1,20 @@
+/*
+ * 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.
+ */
+
+type BreakpointType = 'xs' | 'sm'
+class BreakPointState<T extends Object> {
+  public update(type: BreakpointType):void {
+  }
+}