Line patrol refers to the line staff patrolling along the electric tower to check whether the equipment is complete. If there is any damage, they should report to their superiors in time and carry out emergency repairs to avoid delaying the normal transmission of power supply. In order to complete the heavy line inspection task more efficiently, the line inspection chart will be divided into reasonable grids on the basis of information processing, and the line inspection will be carried out according to the grid. Transmission and distribution line inspection is an important link to maintain the safe, stable and reliable operation of power system.