The high-power dry spraying machine for construction sites is a highly efficient concrete spraying equipment. It is usually equipped with a high-power motor or other power device, such as a 7.5KW motor, which can greatly increase the spraying volume, up to 6 cubic meters per hour or even more, with a horizontal conveying distance of up to 150 meters and a vertical conveying distance of up to 40 meters. Its structural design is reasonable, the straight-through rotor type dry bonding material cavity discharges smoothly, the four-point elastic compensation and clamping make the sealing effect good, there is less dust beside the machine and the life of the wearing parts is long. It is widely used in construction projects, mines, tunnels and other construction scenes, which can effectively improve the construction efficiency and quality of shotcrete.