Air pressure pipe bender

The utility model discloses an air pressure pipe bender, which comprises a workbench, an air cylinder (5), an air cylinder assembly, a bent pipe pressing groove (7) and rolling grooves (8). A piston of the air cylinder (5) is connected with the bent pipe pressing groove (7) through a telescopic shaft rod (6). The bent pipe pressing groove (7) is provided with a semi-circle groove opening matched with the diameter of a pipe. Two rolling grooves (8) for positioning two ends of the pipe and being matched with the bent pipe pressing groove (7) to bend the pipe are arranged on the workbench and provided with semi-circle groove openings matched with the diameter of the pipe. The advance and the drawing back of the piston push the telescopic shaft rod (6) and the bent pipe pressing groove (7) to advance and draw back towards the direction of the workbench. The air pressure pipe bender is good in pipe bending quality, consistent and attractive in elbows, high in working efficiency, suitable for bending short pipes and capable of improving utilization rate of the short pipes on construction sites, requires no professionals to perform operation, saves labor cost, and reduces material consumption.