The rotary blasthole drilling rig is equipped with an off-road double cylinder YUCHAI engines featuring low emission and less pollution. The flexible adjustment of boom helps this drilling machine perform well in drilling lower horizontal holes. In addition, we have improved the hydraulic control system so that the rotary blasthole drilling rig get a higher RPM. Further more, the rotary blasthole drilling rig is made of reinforced materials strong enough for transportation from site to site. It is worth mentioning that this drilling machine consists of a dry dust collector and an improved cylinder, therefore emissions and other pollutants will be effectively reduced.