diff --git a/src/main/java/cn/van/business/util/JDUtil.java b/src/main/java/cn/van/business/util/JDUtil.java
index ff09279..96f6566 100644
--- a/src/main/java/cn/van/business/util/JDUtil.java
+++ b/src/main/java/cn/van/business/util/JDUtil.java
@@ -27,6 +27,7 @@ import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 
+import java.math.BigDecimal;
 import java.text.SimpleDateFormat;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -717,13 +718,15 @@ private void handleGiftMoneyFlow(String fromWxid, String message, UserInteractio
                 }
 
                 amount = Double.parseDouble(message);
-                logger.debug("校验金额：{} 元（商品价格的80%：{}）", amount, 0.8 * Double.parseDouble(state.getCollectedFields().get("price"))); // 新增
+                // 格式化后输出日志
+                String formattedAmount = String.format("%.2f", amount);
+                logger.debug("校验金额：{} 元（商品价格的80%：{}）", formattedAmount, 0.8 * Double.parseDouble(state.getCollectedFields().get("price"))); // 新增
                 if (amount < 1 || amount > 0.8 * Double.parseDouble(state.getCollectedFields().get("price"))) {
                     wxUtil.sendTextMessage(fromWxid, "❌ 金额需≥1元且≤商品价格的80%", 1, fromWxid);
                     return;
                 }
 
-                state.getCollectedFields().put("amount", String.valueOf(amount));
+                state.getCollectedFields().put("amount", formattedAmount);
                 state.setCurrentStep(STEP_QUANTITY);
                 break;
 
@@ -896,9 +899,21 @@ public boolean stopGiftCoupon(String giftKey) throws Exception {
 
 
 
-    private boolean isValidAmount(String input) {
-        return input.matches("^\\d+(\\.\\d{1,2})?$");
+private boolean isValidAmount(String input) {
+    if (Util.isNotEmpty(input)) {
+        try {
+            double amount = Double.parseDouble(input);
+            // 校验是否为两位小数（可选）
+            BigDecimal bd = new BigDecimal(input);
+            if (bd.scale() > 2) return false; // 精度超过两位返回 false
+            return amount >= 1 && amount <= 50;
+        } catch (NumberFormatException e) {
+            return false;
+        }
     }
+    return false;
+}
+