Ground polishing robot, the method is characterized by comprising the following steps: 1, preparing raw materials; carriage and control device, polishing device, mobile device, a chassis is arranged at the bottom of the carriage; the mobile device includes: a housing; driving wheel and steering gear, the steering gear is arranged at the front end of the chassis; the grinding device comprises a grinding head and a grinding wheel, direction support, the front end of the direction bracket is connected with the polisher; the top of the motor is connected with the steering gear; the driving wheelsare respectively connected to the bottom of the direction bracket and the tail part of the chassis so as to support the carriage; the control device comprises a navigation module, an energy module anda master controller, the master controller and the energy module are contained in the compartment and connected with all the functional devices respectively for energy supply and control, the navigation module is arranged at the top end of the chassis, and therefore the function of automatic navigation and ground grinding is achieved instead of manual work, and the work efficiency is improved.