Piston type pneumatic motor

The invention discloses a piston type pneumatic motor. The piston type pneumatic motor comprises a support, a plunger cylinder body, a flow distribution seat, a rotating cylinder body and multiple plungers, wherein the plunger cylinder body is provided with a plurality of plunger cylinder holes penetrating in the front-back direction; the flow distribution seat is rotationally connected to the rear side of the plunger cylinder body, and an air inlet hole and an air outlet hole are formed in the front side of the flow distribution seat; the rotating cylinder body is located in front of the plunger cylinder body, the included angle between the rotating axis of the rotating cylinder body and the rotating axis of the plunger cylinder body is an obtuse angle or a right angle, and the rotating cylinder body is provided with a plurality of rotating cylinder holes; and the rear ends of all the plungers are slidably arranged in the multiple plunger cylinder holes in a one-to-one correspondence mode, a piston is arrang