diff --git a/hutool-core/src/main/java/cn/hutool/core/util/CharUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/CharUtil.java
index 3461d0cebf..eae26a71d5 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/CharUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/CharUtil.java
@@ -385,7 +385,7 @@ public class CharUtil implements CharPool {
 	 * @since 5.6.2
 	 */
 	public static char toCloseByNumber(int number) {
-		if (number > 20) {
+		if (number < 1 || number > 20) {
 			throw new IllegalArgumentException("Number must be [1-20]");
 		}
 		return (char) ('①' + number - 1);
diff --git a/hutool-core/src/test/java/cn/hutool/core/util/CharUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/CharUtilTest.java
index a1d732111d..89b57d3ef8 100644
--- a/hutool-core/src/test/java/cn/hutool/core/util/CharUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/CharUtilTest.java
@@ -71,4 +71,11 @@ public class CharUtilTest {
 		c = '\u2800';
 		assertTrue(CharUtil.isBlankChar(c));
 	}
+
+	@Test
+	public void issueIDFNHETest(){
+		//Console.log(CharUtil.toCloseByNumber(0)); //此时会打印"⑟"
+		assertThrows(IllegalArgumentException.class, () -> CharUtil.toCloseByNumber(0));
+		assertThrows(IllegalArgumentException.class, () -> CharUtil.toCloseByNumber(-1));
+	}
 }