diff --git a/src/plugins/flattenSetter/flattenSetter.ts b/src/plugins/flattenSetter/flattenSetter.ts
index 04b6c99..d3ace95 100644
--- a/src/plugins/flattenSetter/flattenSetter.ts
+++ b/src/plugins/flattenSetter/flattenSetter.ts
@@ -201,6 +201,7 @@ export class FlattenSetter {
             if (prop.schema instanceof ObjectSchema) {
                 if (NodeHelper.HasSubClass(prop.schema) !== true && NodeHelper.getInCircle(prop.schema) !== true) {
                     NodeHelper.setFlatten(prop, true, flattenConfig.overwriteSwagger);
+                    Helper.logDebug("single property schema to flatten: " + schema.language.default.name);
                     this.flattenSchemaWithSingleProperty(prop.schema, flattenConfig);
                 }
             }
diff --git a/src/plugins/visibilityCleaner.ts b/src/plugins/visibilityCleaner.ts
index 3c6be46..150deb7 100644
--- a/src/plugins/visibilityCleaner.ts
+++ b/src/plugins/visibilityCleaner.ts
@@ -1,5 +1,5 @@
 import { Host, Session, startSession } from "@azure-tools/autorest-extension-base";
-import { CodeModel, Request, codeModelSchema, Metadata, ObjectSchema, isObjectSchema, Property, Extensions, Scheme, ComplexSchema, Operation, OperationGroup, Parameter, VirtualParameter, ImplementationLocation, ArraySchema, DictionarySchema, ConstantSchema } from "@azure-tools/codemodel";
+import { CodeModel, Request, codeModelSchema, Metadata, ObjectSchema, isObjectSchema, Property, Extensions, Scheme, ComplexSchema, Operation, OperationGroup, Parameter, VirtualParameter, ImplementationLocation, ArraySchema, DictionarySchema, ConstantSchema, getAllProperties } from "@azure-tools/codemodel";
 import { isNullOrUndefined, isArray, isNull } from "util";
 import { Helper } from "../helper";
 import { CliConst, M4Node, CliCommonSchema } from "../schema";
@@ -52,6 +52,16 @@ class VisibilityCleaner {
                 }
             }
         }
+
+        if (visible === CliCommonSchema.CodeModel.Visibility.false) {
+            if (NodeHelper.HasSubClass(schema)) {
+                for (let subClass of NodeHelper.getSubClasses(schema, true)) {
+                    if (this.calcObject(subClass) === CliCommonSchema.CodeModel.Visibility.true)
+                        visible = CliCommonSchema.CodeModel.Visibility.true;
+                }
+            }
+        }
+
         NodeHelper.setIsVisibleFlag(schema, visible);
         return visible;
     }