The formation in the south area of Baijian Iron Mine in Xingtai is broken， containing breccia locally， and with poor cementation and serious leakage； thus， leading to some drilling problems， such as sticking due to falling stones， borehole contraction， collapse， drilling string burial， full circulation loss. By optimizing the drilling structure， using new processes and methods， properly selecting drilling parameters， using wireline core drilling plus pre-set technical casing， collapse of the upper coal measure strata was effectively eliminated. The use of reverse-thread casing greatly reduced the risks in placement of casing and pulling out of casing caused by borehole shrinkage and falling stones. The adoption of conventional wireline coring drill rods instead of casing improved the drilling speed in breccia and loose formation， reduced drilling abandonment， and sped up drilling progress. Notably， the use of the high matrix double nozzle bit improved drilling efficiency， and saved drilling construction cost， allowing the project to be completed on schedule.