The disclosure provides a system, a platform and a method for monitoring an insulator string inspection robot capable of flying up and down. Through adoption of the system, the platform and the method, a flight control system, a detecting system and a monitoring system are utilized to perform coordinated control on flying up and down of the insulator string inspection robot, detection and variousimage acquisition, stability, security and convenience of the insulator string inspection robot in the working process can be guaranteed, artificial input is reduced, detection time is effectively shortened, and advantages of wide application scope, high detection precision, easy control and so on are achieved.