diff --git a/关键词检测.py b/关键词检测.py
new file mode 100644
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+++ b/关键词检测.py
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+#2.2 数据统计
+import collections
+import re
+
+# 定义关键词列表
+keywords = ['AI', "人工智能", 'ai']
+
+# 读取文本文件
+with open('MID、BVID、CID及弹幕.txt', 'r', encoding='utf-8') as file:
+    lines = file.readlines()
+
+# 初始化一个Counter对象
+counter = collections.Counter()
+
+# 遍历每一行，检测关键词并计数
+for line in lines:
+    line_lower = line.lower()  # 将行转换为小写以进行不区分大小写的匹配
+    for keyword in keywords:
+        # 使用正则表达式匹配独立的关键词
+        if keyword.lower() == 'AI':
+            # 只在中文字符的上下文中匹配独立的“ai”单词
+            if re.search(r'[\u4e00-\u9fff]AI[\u4e00-\u9fff]', line_lower):
+                counter[line.strip()] += 1
+                break  # 避免同一行多次计数
+        else:
+            if keyword.lower() in line_lower:
+                counter[line.strip()] += 1
+                break  # 避免同一行多次计数
+
+# 获取出现次数最多的前二十个句子
+most_common_lines = counter.most_common(20)
+
+# 输出结果到文件
+with open('AI弹幕.txt', 'w', encoding='utf-8') as f:
+    for line, count in most_common_lines:
+        f.write(f'{line}: {count} 次\n')
+        print(f"{line}: {count} 次")
+