1223 working face of Xingdong Mine was with extremely complicated geological conditions, the fault was 16 up and down the lane in working face, one of the biggest gap was 8 m. Ming under this hard condition was studied, fully mechanized mining face with mining technology was successfully designed, the practice showed the application of the technology made working face with mining produce another 12, 000 t coal, which created great economic and social benefits for mines.