Abstract: Distribution overhead line is the main lines of power grid. Line insulation not only solves the contradiction between tree and line, but also reduces the lightning resistance level. The traditional metal oxide arrester (EGLA) installed on the line can cut off the power frequency continue current caused by lightning flashover. The operation and maintenance of fault identification separator and electromagnetic mechanical counter are time-consuming and laborious. In addition, the pointer of the electromagnetic mechanical counter vibrates slightly, which leads to inaccurate indication. This paper describes the working principle of intelligent lightning arrester based on information uploading of Internet of things. The lightning stroke times, leakage current and other operating parameters of the arrester are uploaded to the monitoring terminal through the sensor and Internet technology. Through big data analysis, targeted maintenance, active perception and accurate lightning protection, the work efficiency is improved, the stability of power grid operation is enhanced, and the quality of people's life and production is improved.