DTH drilling rig is an efficient, flexible, and environmentally friendly specialized engineering machinery equipment, which has unique advantages and a wide range of applications. In urban construction and infrastructure construction, down-the-hole drilling rig can be used for foundation treatment, connection between hard and soft layers of pile foundation, and slope treatment, among others. In environmental protection and resource development, down-the-hole drilling rig can be used for geological exploration, water resource development, and geothermal energy utilization. In addition, down-the-hole drilling rig can also be used in mining exploration, oil and gas well construction, and tunnel excavation, among other fields.