diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index 18f930e1e1..8b11150a1e 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -175,6 +175,7 @@ Yii Framework 2 Change Log
      - Fixed PBKDF2 key truncation.
      - Adjusted API.
 - Enh #4209: Added `beforeCopy`, `afterCopy`, `forceCopy` properties to AssetManager (cebe)
+- Enh #4225: Added `ActiveForm::validateOnBlur` and `ActiveField::validateOnBlur` (qiangxue)
 - Enh #4297: Added check for DOM extension to requirements (samdark)
 - Enh #4317: Added `absoluteAuthTimeout` to yii\web\User (ivokund, nkovacs)
 - Enh #4360: Added client validation support for file validator (Skysplit)
diff --git a/framework/assets/yii.activeForm.js b/framework/assets/yii.activeForm.js
index 185622d9e6..05517fdb9f 100644
--- a/framework/assets/yii.activeForm.js
+++ b/framework/assets/yii.activeForm.js
@@ -79,6 +79,8 @@
         encodeError: true,
         // whether to perform validation when a change is detected on the input
         validateOnChange: false,
+        // whether to perform validation when the input loses focus
+        validateOnBlur: false,
         // whether to perform validation when the user is typing.
         validateOnType: false,
         // number of milliseconds that the validation should be delayed when a user is typing in the input field.
@@ -235,7 +237,10 @@
             if (attribute.validateOnChange) {
                 $input.on('change.yiiActiveForm',function () {
                     validateAttribute($form, attribute, false);
-                }).on('blur.yiiActiveForm', function () {
+                });
+            }
+            if (attribute.validateOnBlur) {
+                $input.on('blur.yiiActiveForm', function () {
                     if (attribute.status == 0 || attribute.status == 1) {
                         validateAttribute($form, attribute, !attribute.status);
                     }
diff --git a/framework/widgets/ActiveField.php b/framework/widgets/ActiveField.php
index 3436af4c72..35d9002869 100644
--- a/framework/widgets/ActiveField.php
+++ b/framework/widgets/ActiveField.php
@@ -95,10 +95,15 @@ class ActiveField extends Component
      */
     public $enableAjaxValidation;
     /**
-     * @var boolean whether to perform validation when the input field loses focus and its value is found changed.
+     * @var boolean whether to perform validation when the value of the input field is changed.
      * If not set, it will take the value of [[ActiveForm::validateOnChange]].
      */
     public $validateOnChange;
+    /**
+     * @var boolean whether to perform validation when the input field loses focus.
+     * If not set, it will take the value of [[ActiveForm::validateOnBlur]].
+     */
+    public $validateOnBlur;
     /**
      * @var boolean whether to perform validation while the user is typing in the input field.
      * If not set, it will take the value of [[ActiveForm::validateOnType]].
@@ -717,7 +722,7 @@ class ActiveField extends Component
             $inputID = Html::getInputId($this->model, $this->attribute);
             $options['id'] = $inputID;
             $options['name'] = $this->attribute;
-            foreach (['validateOnChange', 'validateOnType', 'validationDelay'] as $name) {
+            foreach (['validateOnChange', 'validateOnBlur', 'validateOnType', 'validationDelay'] as $name) {
                 $options[$name] = $this->$name === null ? $this->form->$name : $this->$name;
             }
             $options['container'] = isset($this->selectors['container']) ? $this->selectors['container'] : ".field-$inputID";
diff --git a/framework/widgets/ActiveForm.php b/framework/widgets/ActiveForm.php
index 14e33ac11d..691f86ce25 100644
--- a/framework/widgets/ActiveForm.php
+++ b/framework/widgets/ActiveForm.php
@@ -100,10 +100,15 @@ class ActiveForm extends Widget
      */
     public $validateOnSubmit = true;
     /**
-     * @var boolean whether to perform validation when an input field loses focus and its value is found changed.
+     * @var boolean whether to perform validation when the value of an input field is changed.
      * If [[ActiveField::validateOnChange]] is set, its value will take precedence for that input field.
      */
     public $validateOnChange = true;
+    /**
+     * @var boolean whether to perform validation when an input field loses focus.
+     * If [[ActiveField::$validateOnBlur]] is set, its value will take precedence for that input field.
+     */
+    public $validateOnBlur = true;
     /**
      * @var boolean whether to perform validation while the user is typing in an input field.
      * If [[ActiveField::validateOnType]] is set, its value will take precedence for that input field.
diff --git a/tests/unit/framework/widgets/ActiveFieldTest.php b/tests/unit/framework/widgets/ActiveFieldTest.php
index f4b3e2af1c..952a3284f0 100644
--- a/tests/unit/framework/widgets/ActiveFieldTest.php
+++ b/tests/unit/framework/widgets/ActiveFieldTest.php
@@ -268,12 +268,14 @@ EOD;
         $actualValue = $this->activeField->getClientOptions();
         $expectedJsExpression = "function (attribute, value, messages, deferred) {return true;}";
         $expectedValidateOnChange = true;
+        $expectedValidateOnBlur = true;
         $expectedValidateOnType = false;
         $expectedValidationDelay = 200;
         
         $actualJsExpression = $actualValue['validate'];
         $this->assertEquals($expectedJsExpression, $actualJsExpression->expression);
         $this->assertTrue($expectedValidateOnChange === $actualValue['validateOnChange']);
+        $this->assertTrue($expectedValidateOnBlur === $actualValue['validateOnBlur']);
         $this->assertTrue($expectedValidateOnType === $actualValue['validateOnType']);
         $this->assertTrue($expectedValidationDelay === $actualValue['validationDelay']);         
     }
@@ -288,6 +290,7 @@ EOD;
         $actualValue = $this->activeField->getClientOptions();
         $expectedJsExpression = "function (attribute, value, messages, deferred) {return true;}";
         $expectedValidateOnChange = true;
+        $expectedValidateOnBlur = true;
         $expectedValidateOnType = false;
         $expectedValidationDelay = 200;
         $expectedError = ".help-block";
@@ -295,6 +298,7 @@ EOD;
         $actualJsExpression = $actualValue['validate'];
         $this->assertEquals($expectedJsExpression, $actualJsExpression->expression);
         $this->assertTrue($expectedValidateOnChange === $actualValue['validateOnChange']);
+        $this->assertTrue($expectedValidateOnBlur === $actualValue['validateOnBlur']);
         $this->assertTrue($expectedValidateOnType === $actualValue['validateOnType']);
         $this->assertTrue($expectedValidationDelay === $actualValue['validationDelay']);
         $this->assertTrue(1 === $actualValue['enableAjaxValidation']);
@@ -317,6 +321,7 @@ EOD;
             . "{ return 'yii2' == 'yii2'; }(attribute, value)) { return true; }}";
        
         $expectedValidateOnChange = true;
+        $expectedValidateOnBlur = true;
         $expectedValidateOnType = false;
         $expectedValidationDelay = 200;
         $expectedError = ".help-block";
@@ -324,6 +329,7 @@ EOD;
         $actualJsExpression = $actualValue['validate'];
         $this->assertEquals($expectedJsExpression, $actualJsExpression->expression);
         $this->assertTrue($expectedValidateOnChange === $actualValue['validateOnChange']);
+        $this->assertTrue($expectedValidateOnBlur === $actualValue['validateOnBlur']);
         $this->assertTrue($expectedValidateOnType === $actualValue['validateOnType']);
         $this->assertTrue($expectedValidationDelay === $actualValue['validationDelay']);
         $this->assertTrue(1 === $actualValue['enableAjaxValidation']);
@@ -364,7 +370,7 @@ class ActiveFieldExtend extends ActiveField
     }
     
     /**
-     * Usefull to test other methods from ActiveField, that call ActiveField::getClientOptions()
+     * Useful to test other methods from ActiveField, that call ActiveField::getClientOptions()
      * but it's return value is not relevant for the test being run.
      */
     public function getClientOptions()