diff --git a/ruoyi-fastapi-backend/utils/string_util.py b/ruoyi-fastapi-backend/utils/string_util.py
new file mode 100644
index 0000000..a03fd6b
--- /dev/null
+++ b/ruoyi-fastapi-backend/utils/string_util.py
@@ -0,0 +1,31 @@
+class StringUtil:
+    """
+    字符串工具类
+    """
+
+    @classmethod
+    def is_blank(cls, string: str) -> bool:
+        """
+        校验字符串是否为''或全空格
+        :param string: 需要校验的字符串
+        :return: 校验结果
+        """
+        if string is None:
+            return False
+        str_len = len(string)
+        if str_len == 0:
+            return True
+        else:
+            for i in range(str_len):
+                if string[i] != ' ':
+                    return False
+            return True
+
+    @classmethod
+    def is_empty(cls, string) -> bool:
+        """
+        校验字符串是否为''或None
+        :param string: 需要校验的字符串
+        :return: 校验结果
+        """
+        return string is None or len(string) == 0