The G140YF high-pressure track type open-pit down the hole drilling rig has excellent technical performance of low energy consumption, high efficiency, easy transportation and field construction. The whole vehicle action mechanism is implemented by a hydraulic system, and only the impactor consumes air, thus greatly saving the procurement cost of the entire equipment in the selection of air compressors. The rotary mechanism adopts a new type of motor rotary head, which can maintain strong rotary torque output during open-pit blasting and large hole rock drilling operations. When dragging the air compressor, it has maneuverability, strong climbing ability, and is suitable for rough terrain operations with convenient perforation and displacement features. This drilling rig has high perforation efficiency, easy maintenance, and high reliability, making it an ideal drilling rig for rock drilling operations in mining, highway, water conservancy, power station and other construction projects.