The mining loss is big and the operation safety is poor when the previous medium long hole recovery process was used in Jinfeng Gold Mine to mine the fragile and broken rock mass.So,the paper proposes to use sectioned and stripped medium long hole recovery process and carries out field industrial tests.Good experimental effect is achieved by applying shaft-sinking-by-single-medium-long-hole-blasting technique and drilling blasting parameters optimization.The operation capacity is increased to 375 t/d,the mining loss rate is reduced to 9.2 %,ore dilution rate is 10.3 %.The mining loss and dilution are greatly improved.The research has guiding significance to mines with similar conditions at home and abroad.