The iron ore body in the Yangling Iron Mine area is located in the fourth lithological segment of the Pingtoushan Formation of the Jixian System, which is a shallow metamorphic clastic rock interbedded with muddy marble rock layers. The iron bearing rock series in the mining area is a quartzite type striped magnet with strong magnetism. The upper part of the formation is intact, and the drilling abrasiveness is strong. The lifespan of the drill bit is very low during the drilling process. The lower part of the formation is fractured, and after the hole depth exceeds 300 meters, serious leakage occurs. There is no return of slurry in the hole, resulting in difficulties such as falling blocks and burying drilling. Due to the special geological conditions, floating drilling is prone to occur in boreholes, making it difficult to control the curvature of the borehole. By optimizing the drilling structure, selecting drilling equipment reasonably, and improving the process of using flushing fluid, the above problems and difficulties have been effectively solved, the construction progress has been accelerated, drilling efficiency has been improved, and construction costs have been saved.