In order to reveal the complete geological structure of Xiangshan volcanic basin and explore the metallogenic prospect and potential in the central part of the basin, the Xiangshan Uranium Field Deep Scientific Exploration phase II project deployed a 3 000 meter deep scientific borehole, named CUSD2-1, at “Xingshuxia” in the central part of the basin. To insure the smooth conduction of the drilling, we adopted the advanced AC frequency conversion electric top drive geological core drill, large diameter wireline core drilling technology, anti-inclination and control wireline core drilling tools, high efficiency diamond bit and efficient drag reducing lubricating drilling fluid, which successfully solved the technical problems of deep drilling in complex formation, such as low drilling speed in hard rock, stable hole wall in broken formation, hole leakage, anti-inclination and control in strongly deflecting formation, and safe drilling with large diameter wireline coring, and finally drilled to the predetermined depth, creating the deepest record of S (φ150 mm) diameter wireline coring in geological core drilling in China, and revealed the deep formation structure. This deep drilling provides valuable geological data for deep uranium resource exploration in Xiangshan, which not only has special significance for the scientific research and exploration of deep uranium resources, but also has great significance for the improvement of engineering technology for deep-ultra deep geological drilling.