The 3000m deep scientific drilling project of Jiajika Lithium Mine in west Sichuan is located in the high-altitude areas of western Sichuan Province. According to the technical requirements, the borehole is designed with three drilling sections. A set of economical and practical drilling equipment was used, mainly including HXY9 drill rig, K2790 drilling tower,BW300/16 mud pump. Drilling technology, the coring method, the drilling assembly and the drilling fluid plan were examined and developed. For implementation of the concept of green exploration, necessary measures have been developed to protect the ecological environment of the construction site.