diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPartnerPayApi.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPartnerPayApi.java
index 3b893bf..369c431 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPartnerPayApi.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPartnerPayApi.java
@@ -21,6 +21,8 @@ import cn.felord.payment.PayException;
 import cn.felord.payment.wechat.WechatPayProperties;
 import cn.felord.payment.wechat.enumeration.WeChatServer;
 import cn.felord.payment.wechat.enumeration.WechatPayV3Type;
+import cn.felord.payment.wechat.v3.model.RefundParams;
+import cn.felord.payment.wechat.v3.model.RefundQueryParams;
 import cn.felord.payment.wechat.v3.model.TransactionQueryParams;
 import cn.felord.payment.wechat.v3.model.partner.CloseTransParams;
 import cn.felord.payment.wechat.v3.model.partner.PartnerPayParams;
@@ -212,6 +214,61 @@ public class WechatPartnerPayApi extends AbstractApi {
         return wechatResponseEntity;
     }
 
+    /**
+     * 申请退款API
+     *
+     * @param refundParams the refund params
+     * @return the wechat response entity
+     * @since 1.0.15-SNAPSHOT
+     */
+    public WechatResponseEntity<ObjectNode> refund(RefundParams refundParams) {
+        WechatResponseEntity<ObjectNode> wechatResponseEntity = new WechatResponseEntity<>();
+        this.client().withType(WechatPayV3Type.REFUND, refundParams)
+                .function(((type, params) -> {
+                    URI uri = UriComponentsBuilder.fromHttpUrl(type.uri(WeChatServer.CHINA))
+                            .build()
+                            .toUri();
+                    WechatPayProperties.V3 v3 = this.wechatMetaBean().getV3();
+                    params.setNotifyUrl(v3.getDomain().concat(params.getNotifyUrl()));
+                    return Post(uri, params);
+                }))
+                .consumer(wechatResponseEntity::convert)
+                .request();
+        return wechatResponseEntity;
+    }
+
+
+
+    /**
+     * 商户退款订单查询API
+     *
+     * @param params the params
+     * @return the wechat response entity
+     * @since 1.0.15-SNAPSHOT
+     */
+    public WechatResponseEntity<ObjectNode> queryRefundInfo(RefundQueryParams params) {
+        WechatResponseEntity<ObjectNode> wechatResponseEntity = new WechatResponseEntity<>();
+        this.client().withType(WechatPayV3Type.QUERY_REFUND, params)
+                .function(this::queryRefundFunction)
+                .consumer(wechatResponseEntity::convert)
+                .request();
+        return wechatResponseEntity;
+    }
+
+    private RequestEntity<?> queryRefundFunction(WechatPayV3Type type, RefundQueryParams params) {
+        MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<>();
+        // queryParams.add("out_refund_no", params.getRefundOrderNo());
+        queryParams.add("sub_mchid", params.getSubMchid());
+
+        URI uri = UriComponentsBuilder.fromHttpUrl(type.uri(WeChatServer.CHINA))
+                .queryParams(queryParams)
+                .build()
+                .expand(params.getRefundOrderNo())
+                .toUri();
+        return Get(uri);
+    }
+
+
     /**
      * 商户订单号查询API
      *
diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundParams.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundParams.java
index d8ba569..23dfee5 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundParams.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundParams.java
@@ -30,6 +30,12 @@ import java.util.List;
  */
 @Data
 public class RefundParams {
+
+    /**
+     * 子商户的商户号，由微信支付生成并下发.(服务商退款使用)
+     */
+    private String subMchid;
+
     /**
      * 微信支付订单号，同{@link RefundParams#outTradeNo} 二选一
      */
diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundQueryParams.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundQueryParams.java
new file mode 100644
index 0000000..b4b0a2a
--- /dev/null
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/model/RefundQueryParams.java
@@ -0,0 +1,24 @@
+package cn.felord.payment.wechat.v3.model;
+
+import lombok.Data;
+
+/**
+ * 微信支付服务商退款查询API请求参数.
+ *
+ * @author zhongying
+ * @since 1.0.15-SNAPSHOT
+ */
+@Data
+public class RefundQueryParams {
+
+    /**
+     * 子商户id
+     */
+    private String subMchid;
+
+    /**
+     * 退款单号
+     */
+    private String refundOrderNo;
+
+}