diff --git a/Judge.py b/Judge.py
new file mode 100644
index 0000000..a315d2f
--- /dev/null
+++ b/Judge.py
@@ -0,0 +1,48 @@
+#异常判断
+import re
+
+#使用中文的字符编码来判断文件的类型
+def judgeFile(name):
+    #中文的字符编码
+    zhPattern = re.compile(u'[\u4e00-\u9fa5]+')
+    for line in open(name, encoding='utf-8'):
+        match = zhPattern.search(line)
+    if match == None:
+        return False
+    else:
+        return True
+
+#当输入文件序号合法的情况下，再检查文件是否重复查询还是词频结果文件
+def judgeNumber(x, FileAdict):
+    name = x.split('.')[0]
+    find = name[0: 3]
+    if find == 'res':
+        print("文件不可查询，该文件是词频结果文件")
+        print("------------------------------------")
+        return False
+    else:
+        res = "res" + x
+        if res in FileAdict.values():
+            print("该文件已经查询过")
+            print("------------------------------------")
+            return False
+    return True
+
+#检查输入的文件序号是否合法
+def checkNum(x,FileAdict):
+    #文件数目的字符个数是否符合输入的字符长度 或者输入为空
+    if len(str(len(FileAdict))) < len(x) or len(x) == 0:
+        return -1
+    num = 0
+    #将字符串每个字符进行检查，同时对合法的字符串生成整数型
+    for i in range(0, len(x)):
+        if ord(x[i]) - ord('0') >= 0 and ord(x[i]) - ord('0') <= 9:
+            num = ord(x[i]) - ord('0') + num * 10
+        else:
+            return -1
+    if num <= len(FileAdict) and num >= 1 :
+        return num
+    else:
+        print("输入的序号不在文件序号范围内")
+        print("------------------------------------")
+        return -1
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