Abstract: There are different types of instruments in the early warning network stations, and the download methods of calibration data are also different. In this paper, the strong earthquake instrument system of the early warning network station of Beijing Earthquake Administration needs to be calibrated twice a year. An automatic download calibration file software is designed using python language to solve the problem of easy misoperation and time-consuming manual download of calibration files in daily operation and maintenance. The one-click download function of calibration data of different types of instruments provides convenient work for station operation and maintenance. The software has been applied in the calibration data download of Beijing early warning network.