diff --git a/_doc/ChangeLog.md b/_doc/ChangeLog.md
index b4178f61..baed6563 100644
--- a/_doc/ChangeLog.md
+++ b/_doc/ChangeLog.md
@@ -17,6 +17,7 @@
 - fix: 修复微信退款同步时, 错误信息未保存问题
 - fix: 修复手动发起退款时上下文未进行初始化的问题
 - fix: 修复简单退款选择全部退款时报错问题
+- fix: 修复退款时未检验退款金额问题，导致可以退款余额可以大于可退余额
 
 ##  [v2.0.0]
 - 支持支付宝支付: 扫码支付、付款码支付、PC支付、H5支付
diff --git a/daxpay-single-sdk/src/test/java/cn/bootx/platform/daxpay/sdk/payment/SimpleRefundOrderTest.java b/daxpay-single-sdk/src/test/java/cn/bootx/platform/daxpay/sdk/payment/SimpleRefundOrderTest.java
index d4f3acf2..e5b5f03b 100644
--- a/daxpay-single-sdk/src/test/java/cn/bootx/platform/daxpay/sdk/payment/SimpleRefundOrderTest.java
+++ b/daxpay-single-sdk/src/test/java/cn/bootx/platform/daxpay/sdk/payment/SimpleRefundOrderTest.java
@@ -37,7 +37,7 @@ public class SimpleRefundOrderTest {
     public void refundAllOrder(){
         SimpleRefundParam param = new SimpleRefundParam();
         param.setClientIp("127.0.0.1");
-        param.setPaymentId(1762014603543281664L);
+        param.setPaymentId(1762025452118953984L);
         param.setRefundNo("R" + RandomUtil.randomNumbers(5));
         param.setRefundAll(true);
         DaxPayResult<RefundModel> execute = DaxPayKit.execute(param);
@@ -53,11 +53,11 @@ public class SimpleRefundOrderTest {
         SimpleRefundParam param = new SimpleRefundParam();
         param.setClientIp("127.0.0.1");
 
-        param.setPaymentId(1762018229581910016L);
+        param.setPaymentId(1762025452118953984L);
         param.setRefundAll(false);
         param.setRefundNo("R" + RandomUtil.randomNumbers(5));
         // 设置具体的退款参数
-        param.setAmount(1);
+        param.setAmount(19);
 
         DaxPayResult<RefundModel> execute = DaxPayKit.execute(param);
         System.out.println(execute);
diff --git a/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundAssistService.java b/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundAssistService.java
index cce655f0..fe6280f3 100644
--- a/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundAssistService.java
+++ b/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundAssistService.java
@@ -120,6 +120,7 @@ public class RefundAssistService {
         List<String> tradesStatus = Arrays.asList(
                 PayStatusEnum.PROGRESS.getCode(),
                 PayStatusEnum.CLOSE.getCode(),
+                PayStatusEnum.REFUNDED.getCode(),
                 PayStatusEnum.REFUNDING.getCode(),
                 PayStatusEnum.FAIL.getCode());
         if (tradesStatus.contains(payOrder.getStatus())) {
@@ -128,12 +129,14 @@ public class RefundAssistService {
         }
 
         // 过滤掉金额为空和0的退款参数
-        List<RefundChannelParam> channelParams = param.getRefundChannels()
-                .stream()
-                .filter(r -> Objects.nonNull(r.getAmount()))
-                .filter(r -> r.getAmount() > 0)
-                .collect(Collectors.toList());
-        param.setRefundChannels(channelParams);
+        if (!param.isRefundAll()) {
+            List<RefundChannelParam> channelParams = param.getRefundChannels()
+                    .stream()
+                    .filter(r -> Objects.nonNull(r.getAmount()))
+                    .filter(r -> r.getAmount() > 0)
+                    .collect(Collectors.toList());
+            param.setRefundChannels(channelParams);
+        }
 
         // 退款号唯一校验
         if (StrUtil.isNotBlank(param.getRefundNo())
diff --git a/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundService.java b/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundService.java
index 0f963683..5178a95a 100644
--- a/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundService.java
+++ b/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/core/payment/refund/service/RefundService.java
@@ -101,7 +101,7 @@ public class RefundService {
                     .stream()
                     .map(o -> new RefundChannelParam()
                             .setChannel(o.getChannel())
-                            .setAmount(o.getAmount()))
+                            .setAmount(o.getRefundableBalance()))
                     .collect(Collectors.toList());
             param.setRefundChannels(channelParams);
         } else if (simple) {
@@ -154,13 +154,16 @@ public class RefundService {
             refundStrategy.initRefundParam(payOrder, refundParam, payChannelOrder);
         }
 
-        // 生成通道退款订单对象
+        // 2.1 退款前校验操作
+        payRefundStrategies.forEach(AbsRefundStrategy::doBeforeCheckHandler);
+
+        // 2.2 生成通道退款订单对象
         payRefundStrategies.forEach(AbsRefundStrategy::generateChannelOrder);
 
-        // 退款操作的预处理, 使用独立的新事物进行发起, 返回创建成功的退款订单, 成功后才可以进行下一阶段的操作
+        // 2.3 退款操作的预处理, 使用独立的新事物进行发起, 返回创建成功的退款订单, 成功后才可以进行下一阶段的操作
         RefundOrder refundOrder = SpringUtil.getBean(this.getClass()).preRefundMethod(refundParam, payOrder, payRefundStrategies);
 
-        // 设置退款订单对象
+        // 2.4 设置退款订单对象
         payRefundStrategies.forEach(r->r.setRefundOrder(refundOrder));
 
         try {
@@ -168,7 +171,7 @@ public class RefundService {
             payRefundStrategies.forEach(AbsRefundStrategy::doBeforeRefundHandler);
             // 3.2 执行退款策略
             payRefundStrategies.forEach(AbsRefundStrategy::doRefundHandler);
-            // 3.4 执行退款发起成功后操作
+            // 3.3 执行退款发起成功后操作
             payRefundStrategies.forEach(AbsRefundStrategy::doSuccessHandler);
 
             // 4.进行成功处理, 分别处理退款订单, 通道退款订单, 支付订单
diff --git a/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/func/AbsRefundStrategy.java b/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/func/AbsRefundStrategy.java
index aab8f612..b0906746 100644
--- a/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/func/AbsRefundStrategy.java
+++ b/daxpay-single/daxpay-single-service/src/main/java/cn/bootx/platform/daxpay/service/func/AbsRefundStrategy.java
@@ -1,7 +1,8 @@
 package cn.bootx.platform.daxpay.service.func;
 
-import cn.bootx.platform.daxpay.code.RefundStatusEnum;
 import cn.bootx.platform.daxpay.code.PayStatusEnum;
+import cn.bootx.platform.daxpay.code.RefundStatusEnum;
+import cn.bootx.platform.daxpay.exception.pay.PayFailureException;
 import cn.bootx.platform.daxpay.param.pay.RefundChannelParam;
 import cn.bootx.platform.daxpay.param.pay.RefundParam;
 import cn.bootx.platform.daxpay.service.core.order.pay.entity.PayChannelOrder;
@@ -62,9 +63,20 @@ public abstract class AbsRefundStrategy implements PayStrategy{
     }
 
     /**
-     * 退款前对处理
+     * 退款前对退款数据校验
      */
-    public void doBeforeRefundHandler() {}
+    public void doBeforeCheckHandler() {
+        // 退款金额不可以大于可退余额
+        if (this.getRefundChannelParam().getAmount() > this.getPayChannelOrder().getRefundableBalance()) {
+            throw new PayFailureException("["+ this.getChannel().getName() +"]退款金额大于可退余额");
+        }
+    }
+
+    /**
+     * 退款前对处理, 主要进行配置的加载和检查
+     */
+    public void doBeforeRefundHandler() {
+    }
 
     /**
      * 退款操作