diff --git a/fe/fe-core/src/main/java/org/apache/doris/persist/gson/RuntimeTypeAdapterFactory.java b/fe/fe-core/src/main/java/org/apache/doris/persist/gson/RuntimeTypeAdapterFactory.java
index f67828d6767d7d3..ee780f0de1b95e7 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/persist/gson/RuntimeTypeAdapterFactory.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/persist/gson/RuntimeTypeAdapterFactory.java
@@ -32,6 +32,7 @@
 import com.google.gson.stream.JsonWriter;
 
 import java.io.IOException;
+import java.lang.reflect.Modifier;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
@@ -282,7 +283,9 @@ public RuntimeTypeAdapterFactory<T> registerCompatibleSubtype(Class<? extends T>
     }
 
     public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) {
-        if (!baseType.isAssignableFrom(type.getRawType()) && !subtypeToLabel.containsKey(type.getRawType())) {
+        if (baseType != type.getRawType() && !subtypeToLabel.containsKey(type.getRawType())
+                && !(Modifier.isAbstract(type.getRawType().getModifiers())
+                     && baseType.isAssignableFrom(type.getRawType()))) {
             return null;
         }