Abstract: The demand of deep and peripheral resource exploration on crisis mine is more and more along with the decrease of lower resource. Tunnel exploration is a kind of method with high efficiency and economy, but special tunnel exploration drilling rigs are scarce. ZDY1000G type all hydraulic tunnel drilling rig is a kind of equipment designed for tunnel exploration, also can be used to drill gas drainage holes, water exploration holes and other engineering holes. The design approach, mechanical system and hydraulic system for the drilling rig were introduced, double-pump hydraulic system with the function of pressure reduction drilling. Dual-cylinder and chain speed multiple mechanism with compound cushioning and tension device were described in detailed.