diff --git a/hutool-core/src/test/java/org/dromara/hutool/core/math/Issue3809Test.java b/hutool-core/src/test/java/org/dromara/hutool/core/math/Issue3809Test.java
new file mode 100644
index 000000000..e991b9a38
--- /dev/null
+++ b/hutool-core/src/test/java/org/dromara/hutool/core/math/Issue3809Test.java
@@ -0,0 +1,16 @@
+package org.dromara.hutool.core.math;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class Issue3809Test {
+	@Test
+	void roundStrTest() {
+		Assertions.assertEquals("9999999999999999.99", NumberUtil.roundStr("9999999999999999.99", 2));  //输出结果不符合方法声明返回值规则
+		Assertions.assertEquals("11111111111111119.00", NumberUtil.roundStr("11111111111111119.00", 2));
+		Assertions.assertEquals("7999999999999999.99", NumberUtil.roundStr("7999999999999999.99", 2)); //输出结果不符合方法声明返回值规则
+		Assertions.assertEquals("699999999991999.92", NumberUtil.roundStr("699999999991999.92", 2)); //输出结果不符合方法声明返回值规则
+		Assertions.assertEquals("10.92", NumberUtil.roundStr("10.92", 2));
+		Assertions.assertEquals("10.99", NumberUtil.roundStr("10.99", 2));
+	}
+}
diff --git a/hutool-json/src/test/java/org/dromara/hutool/json/reader/Issue3808Test.java b/hutool-json/src/test/java/org/dromara/hutool/json/reader/Issue3808Test.java
new file mode 100644
index 000000000..f0b13282b
--- /dev/null
+++ b/hutool-json/src/test/java/org/dromara/hutool/json/reader/Issue3808Test.java
@@ -0,0 +1,17 @@
+package org.dromara.hutool.json.reader;
+
+import org.dromara.hutool.core.io.resource.ResourceUtil;
+import org.dromara.hutool.core.util.CharsetUtil;
+import org.dromara.hutool.json.JSON;
+import org.dromara.hutool.json.JSONUtil;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class Issue3808Test {
+	@Test
+	void parseTest() {
+		final String str = ResourceUtil.readStr("issue3808.json", CharsetUtil.UTF_8);
+		final JSON parse = JSONUtil.parse(str);
+		Assertions.assertNotNull(parse);
+	}
+}
diff --git a/hutool-json/src/test/resources/issue3808.json b/hutool-json/src/test/resources/issue3808.json
new file mode 100644
index 000000000..587d22d79
--- /dev/null
+++ b/hutool-json/src/test/resources/issue3808.json
@@ -0,0 +1 @@
+{"recommend_text":"✅宁波，‌一座历史悠久的文化名城"}