Traditional drilling rig is mainly composed of major structure, work station and pump station, the heavy weight makes inconvenient transportation. ZDY4000LS all-hydraulic crawler tunnel drilling rig is a new one for coal mine, which has reasonable structure layout and complete auxiliary functions. It can effectively improve the drilling efficiency in small and medium-sized coal mines, increase drilling production and reduce labor intensity of workers. This paper introduces ZDY4000LS all-hydraulic crawler tunnel drilling rig about its main technical parameters, structure layout characteristics and hydraulic system. The application shows that this drilling rig has popularization value for the tunnels which are narrow or being restricted by conveying belt.