The utility model provides a sand blower, include: top connection, core, body, guide bar and lower clutch, wherein, top connection and lower clutch set up respectively at the both ends that the body is relative, and the one end of top connection is close to to the core nestification in the inside of body, one end that the lower clutch is close to in the inside of body to the guide bar welding, set up two sets of through -holes on the pipe wall of body, the center pin of two sets of through -holes body above -mentioned relatively is symmetrical, contains two at least through -holes in every group through -hole. The utility model provides a sand blower through set up in the above -mentioned through -hole of body as the clearance hole, has avoided high -speed and has contained the sand flow body from single clearance hole blowout back, produce violent vortex disturbance effect in sand blower body both sides, produce the phenomenon of serious erosive wear to the body, and then, solved that current sand blower discharge capacity is little, the little problem of sand volume.