The invention relates to a robot control system. The current position of a robot can be precisely located, and the walking route of the robot can be newly defined at any time through a remote monitoring device. Professionals do not need to carry out addition or modification in a background program, and an operator only needs to select addition or movement in an established three-dimensional map through a mouse; a new route adjusting command is input at any time, the remote monitoring device can automatically process modified inspection route data, and the data are sent to a robot master control device through a data receiving and transmitting module; and a storage module in the robot master control device generates a new inspection route, and the robot is commanded to carry out inspection according to the new inspection route. The system is easy to operate and accurate in locating, the new inspection route can be generated more easily, and misoperation and unnecessary equipment faults are reduced.