Abstract: Comprehensively considering the three main factors including the structure characteristics of the ZMK5530TZJ60 (A) truck-mounted drilling rig, the shape characteristics of φ127/70 mm double drill pipe, and the drilling process characteristics,φ710/311 mm cluster reverse circulation DTH hammer has been designed. The borehole with cluster type reverse circulation DTH hammer is made up of three conventional normal circulation percussive and φ215.9 mm DTH hammer bit uniformed on the same circumference of a circle. The highest ROP was 4 m/h, and the average ROP was 2.1 m/h, which increased more than 2.6 times as compared to conventional cone bit drilling method under the same condition. Field tests show that its structural was reasonable, as well as test basis was provided for the next evolutionary design.