diff --git a/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java
index 095381842..af2c6de62 100755
--- a/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java
@@ -39,6 +39,9 @@ public class HexUtilTest {
 
 	@Test
 	public void isHexNumberTest() {
+		Assert.assertTrue(HexUtil.isHexNumber("0"));
+		Assert.assertTrue(HexUtil.isHexNumber("002c"));
+
 		String a = "0x3544534F444";
 		Assert.assertTrue(HexUtil.isHexNumber(a));