diff --git a/hutool-core/src/test/java/cn/hutool/core/bean/Issue3497Test.java b/hutool-core/src/test/java/cn/hutool/core/bean/Issue3497Test.java
new file mode 100644
index 000000000..c2af50c54
--- /dev/null
+++ b/hutool-core/src/test/java/cn/hutool/core/bean/Issue3497Test.java
@@ -0,0 +1,18 @@
+package cn.hutool.core.bean;
+
+import cn.hutool.core.bean.copier.CopyOptions;
+import cn.hutool.core.map.MapUtil;
+import cn.hutool.core.util.StrUtil;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Map;
+
+public class Issue3497Test {
+	@Test
+	public void mapToMapTest() {
+		final Map<String, String> aB = MapUtil.builder("a_b", "1").build();
+		final Map<?, ?> bean = BeanUtil.toBean(aB, Map.class, CopyOptions.create().setFieldNameEditor(StrUtil::toCamelCase));
+		Assert.assertEquals(bean.toString(), "{aB=1}");
+	}
+}