diff --git a/src/main/java/com/alibaba/fastjson/JSON.java b/src/main/java/com/alibaba/fastjson/JSON.java
index 6159c72b1b..58be1d984d 100644
--- a/src/main/java/com/alibaba/fastjson/JSON.java
+++ b/src/main/java/com/alibaba/fastjson/JSON.java
@@ -703,6 +703,12 @@ public static String toJSONString(Object object, int defaultFeatures, Serializer
             serializer.write(object);
             String outString = out.toString();
             int len = outString.length();
+            while (len > 0
+                    && outString.charAt(len - 1) == '0'
+                    && object instanceof Number
+                    && !out.isEnabled(SerializerFeature.WriteClassName)) {
+                len--;
+            }
             if (len > 0
                     && outString.charAt(len -1) == '.'
                     && object instanceof Number