Wall of large diameter steel pipe shot blasting machine blow when their jet force, jet plane uniform, large area, high efficiency. Characterized in that: it includes roller frame, roller frame on both sides are set with side shields, brackets, each side of the side shields, brackets are installed together with telescopic frame shot, shot on both sides of the internal telescopic rack were set to send a suction pipe and pills pill pipe, described smoking pills are connected to the suction side of the pipe nozzle, the said reason and get some pills do not send pipeline to connect blasting device, described the sending end of pipe smoking pills are connected to Cyclone, above the top of the separator were connected through a pipe filter, as described in the lower part of the separator are connected to storage bins, storage bins above the discharge pipe, respectively, and fan out through the valve duct connection connected, as described in the duct are connected to the suction side of the pipe to send pills