The downhole power rotary pneumatic DTH hammer drilling technology has broad application prospects in improving the force situation of the drill pipe string under the condition of gas drilling and improving the efficiency of directional drilling. Two types of downhole power rotary pneumatic DTH hammers exist namely the pneumatic DTH hammer with self-rotation bit and the pneumatic DTH hammer driven by screw motor. This paper introduces their development status， working principles， technical characteristics， experimental applications， and analyzes the shortcomings of current research in hope to provide reference for further technical research.