Shot blasting process is a process which use of shot blasting material to effect high-speed impact on the surface of material to achieve the purpose of surface treatment. In order to make the working efficiency and process of shot blasting machine more optimization, this research through mathematical analysis and validation adjustment by experimental machine design new type of shot blasting machine. This research conduct optimize design and discussion for the size and position of key parts of shot blasting machine, adjust position and angle of throwing head and orientation sleeve by experiment to make the shot blasting width reach 1 000 mm, and at the same time ensure best shot blasting effect.