The purpose of this invention is to reduce the changes in the conditions of the processing for projecting shots, and to downsize the air-type shot-treatment machine 10 and simplify its structure. An air-type shot-treatment machine 10 comprises a table 12 to hold an article to be processed, wherein the table 12 can rotate the article and lift and lower it, a nozzle 16 to project shots toward the article together with compressed air, wherein the nozzle 16 is fixed so that it is oriented toward the article, and is connected to a pressurized tank 46 by means of a connecting device 44 having a wear-resistant hose 40, an adjusting device 18 to adjust the quality of shots projected from the nozzle 16, wherein the adjusting device 18 is disposed at the connecting device 44, a rotating device 20 to rotate the table 12, a moving device 22 to lift and lower the table 12, and a control device 24 to control the adjusting device 18 and the rotating device 20 so that while the table 12 is being rotated, the shots are being projected toward the article to be processed, and, further, to control the moving device 22 so that the table 12 is lifted and lowered.