diff --git a/hutool-core/src/main/java/org/dromara/hutool/core/array/ArrayUtil.java b/hutool-core/src/main/java/org/dromara/hutool/core/array/ArrayUtil.java
index a3f973e71..dcad79b6a 100644
--- a/hutool-core/src/main/java/org/dromara/hutool/core/array/ArrayUtil.java
+++ b/hutool-core/src/main/java/org/dromara/hutool/core/array/ArrayUtil.java
@@ -1213,7 +1213,7 @@ public class ArrayUtil extends PrimitiveArrayUtil {
 	 * 获取子数组
 	 *
 	 * @param <T>   数组元素类型
-	 * @param array 数组
+	 * @param array 数组，不允许为空
 	 * @param start 开始位置（包括）
 	 * @param end   结束位置（不包括）
 	 * @return 新的数组
@@ -1221,6 +1221,7 @@ public class ArrayUtil extends PrimitiveArrayUtil {
 	 * @since 4.2.2
 	 */
 	public static <T> T[] sub(final T[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = length(array);
 		if (start < 0) {
 			start += length;
diff --git a/hutool-core/src/main/java/org/dromara/hutool/core/array/PrimitiveArrayUtil.java b/hutool-core/src/main/java/org/dromara/hutool/core/array/PrimitiveArrayUtil.java
index ff3d4a59d..62be2e002 100644
--- a/hutool-core/src/main/java/org/dromara/hutool/core/array/PrimitiveArrayUtil.java
+++ b/hutool-core/src/main/java/org/dromara/hutool/core/array/PrimitiveArrayUtil.java
@@ -12,6 +12,7 @@
 
 package org.dromara.hutool.core.array;
 
+import org.dromara.hutool.core.lang.Assert;
 import org.dromara.hutool.core.math.NumberUtil;
 import org.dromara.hutool.core.util.ObjUtil;
 import org.dromara.hutool.core.util.RandomUtil;
@@ -1290,6 +1291,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static byte[] sub(final byte[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1327,6 +1329,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static int[] sub(final int[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1364,6 +1367,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static long[] sub(final long[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1401,6 +1405,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static short[] sub(final short[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1438,6 +1443,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static char[] sub(final char[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1475,6 +1481,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static double[] sub(final double[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1512,6 +1519,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static float[] sub(final float[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;
@@ -1549,6 +1557,7 @@ public class PrimitiveArrayUtil {
 	 * @since 4.5.2
 	 */
 	public static boolean[] sub(final boolean[] array, int start, int end) {
+		Assert.notNull(array, "array must be not null !");
 		final int length = Array.getLength(array);
 		if (start < 0) {
 			start += length;