diff --git a/src/components/radio/nz-radio-button.component.ts b/src/components/radio/nz-radio-button.component.ts
index 6cec0700518..747abfc66a5 100644
--- a/src/components/radio/nz-radio-button.component.ts
+++ b/src/components/radio/nz-radio-button.component.ts
@@ -24,8 +24,8 @@ import { NzRadioComponent } from './nz-radio.component';
   ]
 })
 export class NzRadioButtonComponent extends NzRadioComponent implements OnInit {
-  private _radioButtonDisabled = false;
-  private _radioButtonChecked = false;
+  _checked = false;
+  _disabled = false;
   _prefixCls = 'ant-radio-button';
   _innerPrefixCls = `${this._prefixCls}-inner`;
   _inputPrefixCls = `${this._prefixCls}-input`;
@@ -33,22 +33,22 @@ export class NzRadioButtonComponent extends NzRadioComponent implements OnInit {
   @Input()
   @HostBinding('class.ant-radio-button-wrapper-disabled')
   set nzDisabled(value: boolean) {
-    this._radioButtonDisabled = toBoolean(value);
+    this._disabled = toBoolean(value);
     this.setClassMap();
   }
 
   get nzDisabled(): boolean {
-    return this._radioButtonDisabled;
+    return this._disabled;
   }
 
   @Input()
   @HostBinding('class.ant-radio-button-wrapper-checked')
   set nzChecked(value: boolean) {
-    this._radioButtonChecked = toBoolean(value);
+    this._checked = toBoolean(value);
     this.setClassMap();
   }
 
   get nzChecked(): boolean {
-    return this._radioButtonChecked;
+    return this._checked;
   }
 }
diff --git a/src/components/radio/nz-radio.component.ts b/src/components/radio/nz-radio.component.ts
index 7f07d24749f..1f9b8fd6101 100644
--- a/src/components/radio/nz-radio.component.ts
+++ b/src/components/radio/nz-radio.component.ts
@@ -37,9 +37,9 @@ import { NzRadioGroupComponent } from './nz-radio-group.component';
   ]
 })
 export class NzRadioComponent implements OnInit, ControlValueAccessor {
-  private _checked = false;
-  private _disabled = false;
   private _focused = false;
+  _checked = false;
+  _disabled = false;
   _el: HTMLElement;
   _classMap;
   _value: string;