At present, most of the laser scanning galvanometer control boards need to connected the industrial computer to work under the Windows operating system, which is very inconvenient to operate on the handheld laser cleaning equipment. In order to improve the integration and effectiveness of the laser scanning galvanometer, a laser galvanometer assist control board based on XY2-100 protocol is designed, which uses XC7A100T chip of XILINX′s ARTIX-7 series as the main control chip. The common I/O port of the XC7A100T chip is used to generate 4-channel control signal for controlling the galvanometer, and the scanning range and scanning speed of the laser galvanometer are adjusted by a knob, so that the galvanometer of the handheld laser cleaning equipment can work independently.