diff --git a/src/factory/object/trade/DeviceInfo.php b/src/factory/object/trade/DeviceInfo.php
index 39c70d4..f08b5c8 100644
--- a/src/factory/object/trade/DeviceInfo.php
+++ b/src/factory/object/trade/DeviceInfo.php
@@ -2,6 +2,8 @@
 
 namespace Tansilu\HfPayLib\factory\object\trade;
 
+use JsonSerializable;
+use PHPUnit\Util\Json;
 use Tansilu\HfPayLib\exception\ParamsException;
 
 /**
@@ -31,7 +33,7 @@ use Tansilu\HfPayLib\exception\ParamsException;
  * @property $serviceProviderIp    商户服务IP地址
  * @property $merUrl               商户网址
  */
-class DeviceInfo
+class DeviceInfo implements JsonSerializable
 {
     public static function make(
         string $devType,
@@ -62,6 +64,14 @@ class DeviceInfo
         $this->data[$name] = $value;
     }
 
+    /**
+     * @throws ParamsException
+     */
+    public function __toString()
+    {
+        return $this->toJson();
+    }
+
 
     public function toJSON(): string
     {
@@ -76,4 +86,9 @@ class DeviceInfo
         }
         return json_encode($this->data, JSON_UNESCAPED_UNICODE);
     }
+
+    public function jsonSerialize(): array
+    {
+        return $this->data;
+    }
 }
\ No newline at end of file
diff --git a/src/factory/object/trade/DivDetail.php b/src/factory/object/trade/DivDetail.php
index 5dfa368..a440b12 100644
--- a/src/factory/object/trade/DivDetail.php
+++ b/src/factory/object/trade/DivDetail.php
@@ -2,13 +2,15 @@
 
 namespace Tansilu\HfPayLib\factory\object\trade;
 
+use JsonSerializable;
+
 /**
  * @property $divCustId      分账客户号
  * @property $divAcctId      分账账户号
  * @property $divAmt         分账金额
  * @property $riskDivType    风控分账用途
  */
-class DivDetail
+class DivDetail implements JsonSerializable
 {
     public static function make(string $divCustId, string $divAcctId, string $amount, string $riskDivType): self
     {
@@ -35,9 +37,18 @@ class DivDetail
         $this->data[$name] = $value;
     }
 
+    public function __toString()
+    {
+        return $this->toJSON();
+    }
 
     public function toJSON(): string
     {
         return json_encode($this->data, JSON_UNESCAPED_UNICODE);
     }
+
+    public function jsonSerialize(): array
+    {
+        return $this->data;
+    }
 }
\ No newline at end of file
diff --git a/src/factory/object/trade/ObjectInfo.php b/src/factory/object/trade/ObjectInfo.php
index fb2c613..d709455 100644
--- a/src/factory/object/trade/ObjectInfo.php
+++ b/src/factory/object/trade/ObjectInfo.php
@@ -2,6 +2,8 @@
 
 namespace Tansilu\HfPayLib\factory\object\trade;
 
+use JsonSerializable;
+
 /**
  * 藏品信息
  *
@@ -22,7 +24,7 @@ namespace Tansilu\HfPayLib\factory\object\trade;
  * @property string $regCustId             买家注册用户ID
  *
  */
-class ObjectInfo
+class ObjectInfo implements JsonSerializable
 {
     public static function make(int $marketType): self
     {
@@ -46,9 +48,18 @@ class ObjectInfo
         $this->data[$name] = $value;
     }
 
+    public function __toString()
+    {
+        return $this->toJSON();
+    }
 
     public function toJSON(): string
     {
         return json_encode($this->data, JSON_UNESCAPED_UNICODE);
     }
+
+    public function jsonSerialize(): array
+    {
+        return $this->data;
+    }
 }
\ No newline at end of file