At present, ship deck cleaning relies heavily on manual holding grinder. This method is inefficient, seriously polluted, and can not strengthen the steel plate. It has become a trend to use shot blasting technology to replace it. Aiming at the problems of inconvenient control and low intelligence of shot blasting device, a shot blasting robot system with high reliability is designed. The hardware and software of the deck shot blasting robot controller are designed and developed by using embedded processor. According to the actual operation application requirements, the path planning method of shot blasting is given. The on-site control of the deck shot blasting robot is realized by programming, and the mutual communication between various tool modules and the robot human controller is realized. Finally, the robot is put on the deck of a real ship for experiment. The experimental results show that the shot blasting robot system realizes the control of shot blasting, dust removal, movement and other work processes, and has a certain function of autonomous guidance shot blasting, which can improve the working environment of operators.