To provide a shot blast device capable of efficiently performing blasting by projecting liquid mixed with a projection material by a projector using an impeller at a wide angle by a simple structure and smoothly guiding the liquid mixed with the projection material to the projector by the simple structure.

This shot blast device 1 is constituted of a case body 2, a supporting tool 4 for supporting a workpiece 3 provided in the case body 2, the projector 15 using the impeller 14 capable of projecting the liquid mixed with the projection material to the workpiece supported by the supporting tool 4, and a pump 19 to supply the liquid mixed with the projection material to the projector 15.