Abstract The reverse circulation drilling technology is that drilling fluid is pumped down to the annulus, through drill bit and inside of the drilling tool, comes back to the ground. It has many advantages, such as reducing the formation leakage, protecting the oil and gas formation, and cutting sample very clear etc. It includes air lifting, air and pump sucking reverse circulation drilling. Air lifting reverse circulation drilling needs air compressor, air tank, air box, double wall drill tool, air mixer and reverse drilling bit etc. By applying the original drilling rig, these equipments are connected to drill string and carried out the drilling work, after finishing drilling work, these equipments can be removed totally, and have no influence to the normal drilling work. Through testing and on-site application, these equipments are coordinative, drilled 400m in the leaking formation and got a better effect.