diff --git a/src/Methods/EthMethod.php b/src/Methods/EthMethod.php
index 5240eb7..03aef80 100644
--- a/src/Methods/EthMethod.php
+++ b/src/Methods/EthMethod.php
@@ -118,11 +118,13 @@ class EthMethod extends JSONRPC implements IMethod
                         }
                     }
                     if ($isError) {
-                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . '.');
+                        $verifyMessage = call_user_func([$subRule, 'getVerifyMessage']);
+                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . ', message: ' . $verifyMessage . '.');
                     }
                 } else {
                     if (call_user_func([$rule, 'validate'], $params[$key]) === false) {
-                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . '.');
+                        $verifyMessage = call_user_func([$rule, 'getVerifyMessage']);
+                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . ', message: ' . $verifyMessage . '.');
                     }
                 }
             } else {
diff --git a/src/Validators/AddressValidator.php b/src/Validators/AddressValidator.php
index 0de7a28..606b913 100644
--- a/src/Validators/AddressValidator.php
+++ b/src/Validators/AddressValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class AddressValidator
+class AddressValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/BlockHashValidator.php b/src/Validators/BlockHashValidator.php
index 3af31e8..c9e4081 100644
--- a/src/Validators/BlockHashValidator.php
+++ b/src/Validators/BlockHashValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class BlockHashValidator
+class BlockHashValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/BooleanValidator.php b/src/Validators/BooleanValidator.php
index a6b99be..36bf500 100644
--- a/src/Validators/BooleanValidator.php
+++ b/src/Validators/BooleanValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class BooleanValidator
+class BooleanValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/CallValidator.php b/src/Validators/CallValidator.php
index f7a83e4..571075c 100644
--- a/src/Validators/CallValidator.php
+++ b/src/Validators/CallValidator.php
@@ -12,11 +12,12 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\TagValidator;
 use Web3\Validators\HexValidator;
 
-class CallValidator
+class CallValidator extends Validator implements IValidator
 {
     /**
      * validate
@@ -27,30 +28,39 @@ class CallValidator
     public static function validate($value)
     {
         if (!is_array($value)) {
+            self::$verifyMessage = 'call must be array';
             return false;
         }
         if (isset($value['from']) && AddressValidator::validate($value['from']) === false) {
+            self::$verifyMessage = 'from is not valid';
             return false;
         }
         if (!isset($value['to'])) {
+            self::$verifyMessage = 'to is required';
             return false;
         }
         if (AddressValidator::validate($value['to']) === false) {
+            self::$verifyMessage = 'to is not valid';
             return false;
         }
         if (isset($value['gas']) && QuantityValidator::validate($value['gas']) === false) {
+            self::$verifyMessage = 'gas is not valid';
             return false;
         }
         if (isset($value['gasPrice']) && QuantityValidator::validate($value['gasPrice']) === false) {
+            self::$verifyMessage = 'gasPrice is not valid';
             return false;
         }
         if (isset($value['value']) && QuantityValidator::validate($value['value']) === false) {
+            self::$verifyMessage = 'value is not valid';
             return false;
         }
         if (isset($value['data']) && HexValidator::validate($value['data']) === false) {
+            self::$verifyMessage = 'data is not valid';
             return false;
         }
         if (isset($value['nonce']) && QuantityValidator::validate($value['nonce']) === false) {
+            self::$verifyMessage = 'nonce is not valid';
             return false;
         }
         return true;
diff --git a/src/Validators/FilterValidator.php b/src/Validators/FilterValidator.php
index 0d1ff82..1d61c5e 100644
--- a/src/Validators/FilterValidator.php
+++ b/src/Validators/FilterValidator.php
@@ -12,12 +12,13 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\TagValidator;
 use Web3\Validators\HexValidator;
 use Web3\Validators\AddressValidator;
 
-class FilterValidator
+class FilterValidator extends Validator implements IValidator
 {
     /**
      * validate
@@ -28,6 +29,7 @@ class FilterValidator
     public static function validate($value)
     {
         if (!is_array($value)) {
+            self::$verifyMessage = 'filter must be array';
             return false;
         }
         if (
@@ -35,6 +37,7 @@ class FilterValidator
             QuantityValidator::validate($value['fromBlock']) === false &&
             TagValidator::validate($value['fromBlock']) === false
             ) {
+            self::$verifyMessage = 'fromBlock is not valid';
             return false;
         }
         if (
@@ -42,16 +45,19 @@ class FilterValidator
             QuantityValidator::validate($value['toBlock']) === false &&
             TagValidator::validate($value['toBlock']) === false
             ) {
+            self::$verifyMessage = 'toBlock is not valid';
             return false;
         }
         if (isset($value['address'])) {
             if (is_array($value['address'])) {
                 foreach ($value['address'] as $address) {
                     if (AddressValidator::validate($address) === false) {
+                        self::$verifyMessage = 'address is not valid';
                         return false;
                     }
                 }
             } elseif (AddressValidator::validate($value['address']) === false) {
+                self::$verifyMessage = 'address is not valid';
                 return false;
             }
         }
@@ -60,11 +66,13 @@ class FilterValidator
                 if (is_array($topic)) {
                     foreach ($topic as $v) {
                         if (isset($v) && HexValidator::validate($v) === false) {
+                            self::$verifyMessage = 'topics are not valid';
                             return false;
                         }
                     }
                 } else {
                     if (isset($topic) && HexValidator::validate($topic) === false) {
+                        self::$verifyMessage = 'topics are not valid';
                         return false;
                     }
                 }
diff --git a/src/Validators/HexValidator.php b/src/Validators/HexValidator.php
index ade1ae7..9c01be1 100644
--- a/src/Validators/HexValidator.php
+++ b/src/Validators/HexValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class HexValidator
+class HexValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/IdentityValidator.php b/src/Validators/IdentityValidator.php
index 4a61541..7f8f22a 100644
--- a/src/Validators/IdentityValidator.php
+++ b/src/Validators/IdentityValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class IdentityValidator
+class IdentityValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/NonceValidator.php b/src/Validators/NonceValidator.php
index b64bcd2..3e28970 100644
--- a/src/Validators/NonceValidator.php
+++ b/src/Validators/NonceValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class NonceValidator
+class NonceValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/PostValidator.php b/src/Validators/PostValidator.php
index fc38e22..b3ac93e 100644
--- a/src/Validators/PostValidator.php
+++ b/src/Validators/PostValidator.php
@@ -12,11 +12,12 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\HexValidator;
 use Web3\Validators\IdentityValidator;
 
-class PostValidator
+class PostValidator extends Validator implements IValidator
 {
     /**
      * validate
@@ -27,38 +28,49 @@ class PostValidator
     public static function validate($value)
     {
         if (!is_array($value)) {
+            self::$verifyMessage = 'post must be array';
             return false;
         }
         if (isset($value['from']) && IdentityValidator::validate($value['from']) === false) {
+            self::$verifyMessage = 'from is not valid';
             return false;
         }
         if (isset($value['to']) && IdentityValidator::validate($value['to']) === false) {
+            self::$verifyMessage = 'to is not valid';
             return false;
         }
         if (!isset($value['topics']) || !is_array($value['topics'])) {
+            self::$verifyMessage = 'topics are not valid';
             return false;
         }
         foreach ($value['topics'] as $topic) {
             if (IdentityValidator::validate($topic) === false) {
+                self::$verifyMessage = 'topics are not valid';
                 return false;
             }
         }
         if (!isset($value['payload'])) {
+            self::$verifyMessage = 'payload is required';
             return false;
         }
         if (HexValidator::validate($value['payload']) === false) {
+            self::$verifyMessage = 'payload is not valid';
             return false;
         }
         if (!isset($value['priority'])) {
+            self::$verifyMessage = 'priority is required';
             return false;
         }
         if (QuantityValidator::validate($value['priority']) === false) {
+            self::$verifyMessage = 'priority is not valid';
             return false;
         }
         if (!isset($value['ttl'])) {
+            self::$verifyMessage = 'ttl is required';
             return false;
         }
         if (isset($value['ttl']) && QuantityValidator::validate($value['ttl']) === false) {
+            self::$verifyMessage = 'ttl is not valid';
             return false;
         }
         return true;
diff --git a/src/Validators/QuantityValidator.php b/src/Validators/QuantityValidator.php
index fc8d12e..a633b46 100644
--- a/src/Validators/QuantityValidator.php
+++ b/src/Validators/QuantityValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class QuantityValidator
+class QuantityValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/ShhFilterValidator.php b/src/Validators/ShhFilterValidator.php
index 48f7faf..55482cb 100644
--- a/src/Validators/ShhFilterValidator.php
+++ b/src/Validators/ShhFilterValidator.php
@@ -12,11 +12,12 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\HexValidator;
 use Web3\Validators\IdentityValidator;
 
-class ShhFilterValidator
+class ShhFilterValidator extends Validator implements IValidator
 {
     /**
      * validate
@@ -27,18 +28,26 @@ class ShhFilterValidator
     public static function validate($value)
     {
         if (!is_array($value)) {
+            self::$verifyMessage = 'filter of shh must be array';
             return false;
         }
         if (isset($value['to']) && IdentityValidator::validate($value['to']) === false) {
+            self::$verifyMessage = 'to is not valid';
             return false;
         }
-        if (!isset($value['topics']) || !is_array($value['topics'])) {
+        if (!isset($value['topics'])) {
+            self::$verifyMessage = 'topics are required';
+            return false;
+        }
+        if (!is_array($value['topics'])) {
+            self::$verifyMessage = 'topics must be array';
             return false;
         }
         foreach ($value['topics'] as $topic) {
             if (is_array($topic)) {
                 foreach ($topic as $subTopic) {
                     if (HexValidator::validate($subTopic) === false) {
+                        self::$verifyMessage = 'topics are not valid';
                         return false;
                     }
                 }
@@ -46,6 +55,7 @@ class ShhFilterValidator
             }
             if (HexValidator::validate($topic) === false) {
                 if (!is_null($topic)) {
+                    self::$verifyMessage = 'topics are not valid';
                     return false;
                 }
             }
diff --git a/src/Validators/StringValidator.php b/src/Validators/StringValidator.php
index 5e49239..7700ed5 100644
--- a/src/Validators/StringValidator.php
+++ b/src/Validators/StringValidator.php
@@ -12,8 +12,9 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 
-class StringValidator
+class StringValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/TagValidator.php b/src/Validators/TagValidator.php
index fd1f966..55b133e 100644
--- a/src/Validators/TagValidator.php
+++ b/src/Validators/TagValidator.php
@@ -12,9 +12,10 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Utils;
 
-class TagValidator implements IValidator
+class TagValidator extends Validator implements IValidator
 {
     /**
      * validate
diff --git a/src/Validators/TransactionValidator.php b/src/Validators/TransactionValidator.php
index 157d3f2..0732323 100644
--- a/src/Validators/TransactionValidator.php
+++ b/src/Validators/TransactionValidator.php
@@ -12,11 +12,12 @@
 namespace Web3\Validators;
 
 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\TagValidator;
 use Web3\Validators\HexValidator;
 
-class TransactionValidator
+class TransactionValidator extends Validator implements IValidator
 {
     /**
      * validate
@@ -29,36 +30,39 @@ class TransactionValidator
     public static function validate($value)
     {
         if (!is_array($value)) {
+            self::$verifyMessage = 'transaction must be array';
             return false;
         }
         if (!isset($value['from'])) {
+            self::$verifyMessage = 'from is required';
             return false;
         }
         if (AddressValidator::validate($value['from']) === false) {
+            self::$verifyMessage = 'from must be address';
             return false;
         }
         if (isset($value['to']) && AddressValidator::validate($value['to']) === false && $value['to'] !== '') {
+            self::$verifyMessage = 'to must be address';
             return false;
         }
         if (isset($value['gas']) && QuantityValidator::validate($value['gas']) === false) {
+            self::$verifyMessage = 'gas is not valid';
             return false;
         }
         if (isset($value['gasPrice']) && QuantityValidator::validate($value['gasPrice']) === false) {
+            self::$verifyMessage = 'gasPrice is not valid';
             return false;
         }
         if (isset($value['value']) && QuantityValidator::validate($value['value']) === false) {
+            self::$verifyMessage = 'value is not valid';
             return false;
         }
-        // if (!isset($value['data'])) {
-        //     return false;
-        // }
-        // if (HexValidator::validate($value['data']) === false) {
-        //     return false;
-        // }
         if (isset($value['data']) && HexValidator::validate($value['data']) === false) {
+            self::$verifyMessage = 'data is not valid';
             return false;
         }
         if (isset($value['nonce']) && QuantityValidator::validate($value['nonce']) === false) {
+            self::$verifyMessage = 'nonce is not valid';
             return false;
         }
         return true;
diff --git a/src/Validators/Validator.php b/src/Validators/Validator.php
new file mode 100644
index 0000000..3802ada
--- /dev/null
+++ b/src/Validators/Validator.php
@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * This file is part of web3.php package.
+ * 
+ * (c) Kuan-Cheng,Lai <alk03073135@gmail.com>
+ * 
+ * @author Peter Lai <alk03073135@gmail.com>
+ * @license MIT
+ */
+
+namespace Web3\Validators;
+
+use Web3\Validators\IValidator;
+
+class Validator
+{
+    /**
+     * verifyMessage
+     * verify result from calling validate function
+     * 
+     * @var string
+     */
+    protected static $verifyMessage;
+
+    /**
+     * get
+     * 
+     * @param string $name
+     * @return mixed
+     */
+    public function __get($name)
+    {
+        $method = 'get' . ucfirst($name);
+
+        if (method_exists($this, $method)) {
+            return call_user_func_array([$this, $method], []);
+        }
+        return false;
+    }
+
+    /**
+     * set
+     * 
+     * @param string $name
+     * @param mixed $value
+     * @return bool
+     */
+    public function __set($name, $value)
+    {
+        $method = 'set' . ucfirst($name);
+
+        if (method_exists($this, $method)) {
+            return call_user_func_array([$this, $method], [$value]);
+        }
+        return false;
+    }
+
+    /**
+     * getVerifyMessage
+     * 
+     * @return string
+     */
+    public static function getVerifyMessage()
+    {
+        return self::$verifyMessage;
+    }
+}
\ No newline at end of file