diff --git a/components/select/nz-option.component.ts b/components/select/nz-option.component.ts
index 1626d2185d1..ee5c13822b0 100644
--- a/components/select/nz-option.component.ts
+++ b/components/select/nz-option.component.ts
@@ -1,6 +1,15 @@
-import { ChangeDetectionStrategy, Component, Input, TemplateRef, ViewChild, ViewEncapsulation } from '@angular/core';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  Input,
+  OnChanges,
+  TemplateRef,
+  ViewChild,
+  ViewEncapsulation
+} from '@angular/core';
 
 import { InputBoolean } from 'ng-zorro-antd/core';
+import { Subject } from 'rxjs';
 
 @Component({
   selector: 'nz-option',
@@ -9,11 +18,16 @@ import { InputBoolean } from 'ng-zorro-antd/core';
   changeDetection: ChangeDetectionStrategy.OnPush,
   templateUrl: './nz-option.component.html'
 })
-export class NzOptionComponent {
+export class NzOptionComponent implements OnChanges {
+  changes = new Subject();
   @ViewChild(TemplateRef) template: TemplateRef<void>;
   @Input() nzLabel: string;
   // tslint:disable-next-line:no-any
   @Input() nzValue: any;
   @Input() @InputBoolean() nzDisabled = false;
   @Input() @InputBoolean() nzCustomContent = false;
+
+  ngOnChanges(): void {
+    this.changes.next();
+  }
 }
diff --git a/components/select/nz-select.component.ts b/components/select/nz-select.component.ts
index 2156e8d073f..fe84323c969 100644
--- a/components/select/nz-select.component.ts
+++ b/components/select/nz-select.component.ts
@@ -326,6 +326,7 @@ export class NzSelectComponent implements ControlValueAccessor, OnInit, AfterVie
           merge(
             this.listOfNzOptionGroupComponent.changes,
             this.listOfNzOptionComponent.changes,
+            ...this.listOfNzOptionComponent.map(option => option.changes),
             ...this.listOfNzOptionGroupComponent.map(group =>
               group.listOfNzOptionComponent ? group.listOfNzOptionComponent.changes : EMPTY
             )