Abstract: In order to solve the problem of full mechanized mining face crossing fault is difficult, low security, disaster prevention ect. Take 4236 fully mechanized working face of Huashan coal over F1 oblique fault as an example, this paper introduce the determination of abnormal area by fixed point method, remove water drilling, the encryption technology to control gas drainage, advance grouting reinforcement fault near the top of the roof, palisades and special falling coal during passing through fault, supporting, antiskid, anti flying, channeling rock, the end support mobile technology, floor supporting roof control technology. Conclusion: 4236 fully mechanized mining face successfully through the fault, improve the recovery rate of high-quality resources, and achieve good economic benefits, accumulate rich experience in production safety.