The AT reverse circulation drilling rig is a lightweight, high-efficiency, and multifunctional drilling and boring equipment, primarily suitable for drilling water wells, agricultural irrigation wells, and other purpose boreholes, especially for water extraction projects in mountainous areas and rocky strata. This rig adopts new hydraulic technology, equipped with large torque hydraulic motor rotation and large diameter hydraulic cylinder propulsion and lifting. It comes with standard alloy drill bits and other tools for rotary drilling; in hard rock layers, conventional spherical tooth drill bits are used for impact rotary drilling, achieving high-speed hole formation. When paired with an air compressor and pneumatic down-the-hole hammer, it can perform follow-up casing drilling in unstable strata such as gravel.