diff --git a/Falcon.SugarApi.Test/StringExtendTest.cs b/Falcon.SugarApi.Test/StringExtendTest.cs
new file mode 100644
index 0000000..2613f83
--- /dev/null
+++ b/Falcon.SugarApi.Test/StringExtendTest.cs
@@ -0,0 +1,25 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Falcon.SugarApi;
+
+namespace Falcon.SugarApi.Test
+{
+    [TestClass]
+    public class StringExtendTest
+    {
+        [TestMethod]
+        public void TestSplit() {
+            var str = $"a,b.c;d，e。f；g";
+            var strArr = str.SplitStr();
+            Assert.AreEqual(7, strArr.Length, "分割后长度应该为7");
+            str = null;
+            strArr = str.SplitStr();
+            Assert.IsNotNull(strArr);
+            Assert.AreEqual(0, strArr.Length);
+        }
+    }
+}
diff --git a/Falcon.SugarApi/StringExtend.cs b/Falcon.SugarApi/StringExtend.cs
index 3b56fdd..cc4cb27 100644
--- a/Falcon.SugarApi/StringExtend.cs
+++ b/Falcon.SugarApi/StringExtend.cs
@@ -1,9 +1,11 @@
-namespace Falcon.SugarApi
+using System;
+
+namespace Falcon.SugarApi
 {
     /// <summary>
     /// 字符串扩展
     /// </summary>
-    internal static class StringExtend
+    public static class StringExtend
     {
         /// <summary>
         /// 字符串是否为空或null
@@ -17,5 +19,12 @@
         /// <param name="str">字符串</param>
         /// <returns>与IsNullOrEmpty相反</returns>
         public static bool IsNotNullOrEmpty(this string str) => !str.IsNullOrEmpty();
+
+        /// <summary>
+        /// 使用全角半角的逗号句号和分号分割字符串。
+        /// </summary>
+        /// <param name="str">要分割的字符串</param>
+        /// <returns>字符串数组。当str为null时返回空数组</returns>
+        public static string[] SplitStr(this string? str) => str == null ? Array.Empty<string>() : str.Split(new char[] { ',', '，', ';', '；', '.', '。' });
     }
 }