diff --git a/工具v2/database_tools.py b/工具v2/database_tools.py
index bb8279d5..9a2019bb 100644
--- a/工具v2/database_tools.py
+++ b/工具v2/database_tools.py
@@ -641,5 +641,38 @@ def StripSuffix(string, suf_words): #除去字符串前后的空格及suf_words
         string = re.sub(sw+r"[\S]*$","",string)
     return(string) # 返回处理以后的字符串
 
+def MatchCondition(problem,condition_dict): #判断problem这一字典是否符合condition_dict中的所有筛选条件
+    match = True #初始设定符合条件
+    for fieldraw in [c for c in condition_dict if not "_not" in c and not condition_dict[c] == [""]]: #选出正向的条件([""]表示该条件不起作用)
+        cond_list = condition_dict[fieldraw]
+        if type(cond_list) == str:
+            cond_list = [cond_list]
+        field = re.sub(r"\d","",fieldraw)
+        if type(problem[field]) == list: #将题库字典中的相应字段转化成字符串string
+            string = "\n".join((problem[field]))
+        else:
+            string = str(problem[field])
+        current_match = False
+        for cond in cond_list: #有一个条件被满足, 就认为当前字段满足条件了
+            if len(re.findall(cond,string)) > 0:
+                current_match = True
+        if current_match == False:
+            match = False # 如果某个正向条件未满足, 那么match就赋值为False; 如果每一个正向条件都被满足, 那么match仍为True
+    for fieldraw in [c for c in condition_dict if "_not" in c and not condition_dict[c] == [""]]: #选出反向的条件([""]表示该条件不起作用)
+        cond_list = condition_dict[fieldraw]
+        fieldraw = fieldraw.replace("_not","")
+        field = re.sub(r"\d","",fieldraw)
+        if type(problem[field]) == list: #将题库字典中的相应字段转化成字符串string
+            string = "\n".join((problem[field]))
+        else:
+            string = str(problem[field])
+        current_match = True 
+        for cond in cond_list: #有一个条件被满足, 就认为当前字段不被满足了
+            if len(re.findall(cond,string)) > 0:
+                current_match = False
+        if current_match == False: 
+            match = False 
+    return match #返回是否符合条件
+
 if __name__ == "__main__":
     print("数据库工具, import用.")
\ No newline at end of file
diff --git a/工具v2/关键字筛选题号.py b/工具v2/关键字筛选题号.py
new file mode 100644
index 00000000..9246f9b3
--- /dev/null
+++ b/工具v2/关键字筛选题号.py
@@ -0,0 +1,33 @@
+keywords_dict = { 
+        "id":[""], #题号
+        "content":[""], #题面内容
+        "objs":[""], #目标代码
+        "tags":[""], #标签, 如["第二单元"]等
+        "genre":[""], #题目类型, 填空题, 选择题, 解答题
+        "ans":[""], #答案
+        "solution":[""], #解答与提示
+        "duration":[""], #解题时间(目前未设置)
+        "usages":[""], #使用记录, 数据库中格式为 <日期>\t<届别><班别>\t正确率[\t正确率]... 例如"20230301\t2023届01班\t0.985\t0.211
+        "origin":["高二下学期期末","高一下学期"], #题目来源
+        "edit":[""], #导入者及编辑者
+        "same":[""], #相同题目题号
+        "related":[""], #关联题目题号
+        "remark":[""], #备注, 注记
+        "space":[""], #解答题下的空间(em)表示一个m的宽度
+        "unrelated":[""], #无关题目题号
+        # "content2":["双曲线"], #在字段名中加入数字表示这个字段的另一个必要条件
+        "content_not":["抛"], #加_not表示不能出现该样式的词
+}
+#同一字段名中的条件为"或"的关系, 不同字段名(可加数字表示同一字段)中的条件为"且"的关系
+outputfilepath = "临时文件/题号筛选.txt"
+
+from database_tools import *
+
+prodictpath = "../题库0.3/problems.json"
+pro_dict = load_dict(prodictpath)
+
+matchlist = [id for id in pro_dict if MatchCondition(pro_dict[id],keywords_dict)]
+matchstring = generate_exp(matchlist)
+
+SaveTextFile(matchstring,outputfilepath)
+os.system("code -g %s:1"%outputfilepath)
\ No newline at end of file