Abstract: With the rapid development of the social economy, the situation of preventing external damage to transmission lines is becoming increasingly severe. At present, the main means of preventing external damage to transmission lines are the "three prevention" measures. However, the actual situation is influenced by the subjective consciousness of personnel and there are many uncertain factors. Unable to fundamentally plug external security vulnerabilities. Therefore, it is urgent to change the mode of daily prevention of external damage, which emphasizes "blocking" rather than "dredging". The article proposes a safety education platform for preventing external damage to transmission lines based on WeChat mini programs, which can enhance the safety risk identification ability and early warning awareness of construction personnel in areas with external damage hazards. Eliminate the possibility of external damage to transmission lines from the source.