Unmanned aerial vehicles can't solve the problems of power inspection, including replacing spacer bars, insulator strings and installing bird spines. According to relevant information, State Grid Corporation of China is vigorously cooperating with three-dimensional intelligent inspection, and it is necessary to change the traditional manual inspection mode of transmission lines into the manual inspection mode with machine inspection as the main part and supplemented by manual inspection, which does not have the ability to replace spacer bars, insulator strings and install bird thorns.