diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0212872121..2ceba7f8b2 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 * 【extra      】  修复`MailAccount.setAuth`参数与field不一致问题（issue#4217@Github）
 * 【core       】  修复`TransMap.computeIfAbsent`mappingFunction处理不一致问题（issue#IDM6UR@Gitee）
 * 【core       】  修复`MultiResource`游标歧义问题（issue#IDNAOY@Gitee）
+* 【core       】  修复`BufferUtil`copy歧义问题（issue#IDN097@Gitee）
 
 -------------------------------------------------------------------------------------------------------------
 # 5.8.43(2026-01-04)
diff --git a/hutool-core/src/main/java/cn/hutool/core/io/BufferUtil.java b/hutool-core/src/main/java/cn/hutool/core/io/BufferUtil.java
index f4e8157a51..ceed6fa6d0 100644
--- a/hutool-core/src/main/java/cn/hutool/core/io/BufferUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/io/BufferUtil.java
@@ -6,6 +6,7 @@ import cn.hutool.core.util.StrUtil;
 import java.nio.ByteBuffer;
 import java.nio.CharBuffer;
 import java.nio.charset.Charset;
+import java.util.Arrays;
 
 /**
  * {@link ByteBuffer} 工具类<br>
@@ -26,7 +27,7 @@ public class BufferUtil {
 	 * @return 新的ByteBuffer
 	 */
 	public static ByteBuffer copy(ByteBuffer src, int start, int end) {
-		return copy(src, ByteBuffer.allocate(end - start));
+		return ByteBuffer.wrap(Arrays.copyOfRange(src.array(), start, end));
 	}
 
 	/**
diff --git a/hutool-core/src/test/java/cn/hutool/core/io/BufferUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/io/BufferUtilTest.java
index c53dcd7ff8..dfad8facd8 100644
--- a/hutool-core/src/test/java/cn/hutool/core/io/BufferUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/io/BufferUtilTest.java
@@ -1,13 +1,14 @@
 package cn.hutool.core.io;
 
+import cn.hutool.core.util.CharsetUtil;
+import cn.hutool.core.util.StrUtil;
+import org.junit.jupiter.api.Test;
+
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 
 import static org.junit.jupiter.api.Assertions.*;
-import org.junit.jupiter.api.Test;
-
-import cn.hutool.core.util.CharsetUtil;
-import cn.hutool.core.util.StrUtil;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 
 /**
  * BufferUtil单元测试
@@ -81,4 +82,84 @@ public class BufferUtilTest {
 		// 再次调用工具类转换，输出结果应该不变
 		assertEquals(originalText, StrUtil.str(buffer, StandardCharsets.UTF_8));
 	}
+
+	/**
+	 * 测试正常范围内的拷贝功能
+	 */
+	@Test
+	public void copyNormalRangeTest() {
+		// 准备测试数据
+		final byte[] originalData = {65, 66, 67, 68, 69, 70}; // 对应 "ABCDEF"
+		final ByteBuffer srcBuffer = ByteBuffer.wrap(originalData);
+
+		// 执行拷贝操作，从索引1到4（不包含4），即拷贝BCD
+		final ByteBuffer resultBuffer = BufferUtil.copy(srcBuffer, 1, 4);
+
+		// 验证结果
+		final byte[] resultArray = new byte[3];
+		resultBuffer.get(resultArray);
+		assertArrayEquals(new byte[]{66, 67, 68}, resultArray); // BCD
+	}
+
+	/**
+	 * 测试从开头开始拷贝
+	 */
+	@Test
+	public void copyFromStartTest() {
+		final byte[] originalData = {65, 66, 67, 68, 69, 70}; // 对应 "ABCDEF"
+		final ByteBuffer srcBuffer = ByteBuffer.wrap(originalData);
+
+		// 从索引0拷贝到3，即拷贝ABC
+		final ByteBuffer resultBuffer = BufferUtil.copy(srcBuffer, 0, 3);
+
+		final byte[] resultArray = new byte[3];
+		resultBuffer.get(resultArray);
+		assertArrayEquals(new byte[]{65, 66, 67}, resultArray); // ABC
+	}
+
+	/**
+	 * 测试拷贝到末尾
+	 */
+	@Test
+	public void copyToEndTest() {
+		final byte[] originalData = {65, 66, 67, 68, 69, 70}; // 对应 "ABCDEF"
+		final ByteBuffer srcBuffer = ByteBuffer.wrap(originalData);
+
+		// 从索引3拷贝到末尾，即拷贝DEF
+		final ByteBuffer resultBuffer = BufferUtil.copy(srcBuffer, 3, 6);
+
+		final byte[] resultArray = new byte[3];
+		resultBuffer.get(resultArray);
+		assertArrayEquals(new byte[]{68, 69, 70}, resultArray); // DEF
+	}
+
+	/**
+	 * 测试空拷贝（start等于end）
+	 */
+	@Test
+	public void copyEmptyRangeTest() {
+		final byte[] originalData = {65, 66, 67, 68, 69, 70}; // 对应 "ABCDEF"
+		final ByteBuffer srcBuffer = ByteBuffer.wrap(originalData);
+
+		// 拷贝相同起始和结束位置，应该得到空数组
+		final ByteBuffer resultBuffer = BufferUtil.copy(srcBuffer, 2, 2);
+
+		assertEquals(0, resultBuffer.remaining()); // 应该为空
+	}
+
+	/**
+	 * 测试整个数组的拷贝
+	 */
+	@Test
+	public void copyFullRangeTest() {
+		final byte[] originalData = {65, 66, 67, 68, 69, 70}; // 对应 "ABCDEF"
+		final ByteBuffer srcBuffer = ByteBuffer.wrap(originalData);
+
+		// 拷贝整个数组
+		final ByteBuffer resultBuffer = BufferUtil.copy(srcBuffer, 0, 6);
+
+		final byte[] resultArray = new byte[6];
+		resultBuffer.get(resultArray);
+		assertArrayEquals(originalData, resultArray);
+	}
 }