In order to solve the problems of low construction efficiency, unstable quality and heavy environmental pollution in rust removal and galling at the ship outfield painting dressing stage, an intelligent shot blasting robot is designed for the ship deck. Its system composition is briefly introduced, the hardware design and software design of its shot blasting subsystem, dust removal subsystem and obstacle crossing auxiliary mechanism are expounded, and the manual remote control operation mode and automated guidance operation mode are designed. The ship test results show that the robot can meet the requirements of ship deck rust removal cleaning.