diff --git a/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlBuilderTest.java b/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlBuilderTest.java
index 58b2e312b..31d181899 100644
--- a/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlBuilderTest.java
+++ b/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlBuilderTest.java
@@ -518,4 +518,15 @@ public class UrlBuilderTest {
 		final String build = httpUrl.build(CharsetUtil.UTF_8);
 		assertEquals("/a:1/b:1/c:1/d:1/", build);
 	}
+
+	@Test
+	public void issueIAAOC1Test() {
+		// 使用默认编码后，会先decode给定的URL，再encode
+		UrlBuilder urlBuilder = UrlBuilder.ofHttp("http://localhost:9999/getReportDataList?goodsName=工业硫酸98%&conReportTypeId=1");
+		assertEquals("http://localhost:9999/getReportDataList?goodsName=%E5%B7%A5%E4%B8%9A%E7%A1%AB%E9%85%B898%25&conReportTypeId=1", urlBuilder.build());
+
+		// 不指定编码，则保持原字符串
+		urlBuilder = UrlBuilder.ofHttp("http://localhost:9999/getReportDataList?goodsName=工业硫酸98%&conReportTypeId=1", null);
+		assertEquals("http://localhost:9999/getReportDataList?goodsName=工业硫酸98%&conReportTypeId=1", urlBuilder.build());
+	}
 }