The utility model discloses a flexible platform that overhauls of GIS equipment mono -pole, a serial communication port, including insulating extension ladder, work platform, waistband hanger, safe link and armful lever apparatus, work platform fixes on insulating extension ladder's top, and terraced top right side on extension ladder is installed to the waistband hanger, and safe link is installed and is held at waistband hanger peak of the staff. The utility model discloses simple structure, convenient operation, insulating nature is high, and the quality is light, and intensity is big, is furnished with anti -falling device, has improved operation personnel's security, the platform is collapsible after stopping the operation, and is small, is convenient for transport, store and carry.