diff --git a/FlaskService.py b/FlaskService.py
new file mode 100644
index 0000000..0833591
--- /dev/null
+++ b/FlaskService.py
@@ -0,0 +1,55 @@
+from flask import Flask, request, send_file, after_this_request
+import os
+import subprocess
+import socket
+
+app = Flask(__name__)
+app.config['UPLOAD_FOLDER'] = 'uploads'
+app.config['MODIFIED_FOLDER'] = 'modified'
+
+# Make sure the uploaded and modified folders exist
+os.makedirs(app.config['UPLOAD_FOLDER'], exist_ok=True)
+os.makedirs(app.config['MODIFIED_FOLDER'], exist_ok=True)
+
+@app.route('/api/v1/pcap/comment', methods=['POST'])
+def upload_file():
+    if 'file' not in request.files:
+        return "No file part", 400
+
+    file = request.files['file']
+    if file.filename == '':
+        return "No selected file", 400
+
+    if file:
+        # Save uploaded files
+        filepath = os.path.join(app.config['UPLOAD_FOLDER'], file.filename)
+        file.save(filepath)
+
+        # Use PcapNGFormatAnalys.py
+        modified_filepath = modify_file_with_script(filepath)
+
+        # Delete uploaded and modified files after response
+
+        @after_this_request
+        def remove_file(response):
+            try:
+                os.remove(filepath)  # 删除上传的文件
+                os.remove(modified_filepath)  # 删除修改后的文件
+            except Exception as e:
+                app.logger.error(f'Error deleting file: {e}')
+            return response
+
+        # Provide modified file download
+        return send_file(modified_filepath, as_attachment=True)
+
+def modify_file_with_script(input_filepath):
+    modified_filepath = os.path.join(app.config['MODIFIED_FOLDER'], os.path.basename(input_filepath))
+    # Use PcapNGFormatAnalys.py to add Remark
+    script_path = 'PcapNGFormatAnalys.py'
+    subprocess.run(['python', script_path, input_filepath, modified_filepath])
+    return modified_filepath
+
+if __name__ == '__main__':
+    hostname = socket.gethostname()
+    local_ip = socket.gethostbyname(hostname)
+    app.run(host=local_ip, port=5000, debug=True)