With the increase of mining depth,the mining technical conditions of V# orebody in Xincheng Gold Mine are deteriorating dramatically,and the upward horizontal slicing filling mining method is difficult to meet mine production demands because of the high consumption of support and slow operation cycle.Downward horizontal approach filling mining method,while guaranteeing the safety of the roof in the recovery process,alleviates support workload and cost,accelerates the recovery operation cycle and improves the recovery efficiency.The paper details the stope structural layout and stoping process flowsheet of downward horizontal approach filling mining method,and carries out field application.The results show that downward horizontal approach filling mining method is quite suitable for mining deep thick and large broken ore bodies in Xincheng Gold Mine.With it,the mining loss rate is down to 2 % and ore dilution rate to 4 %.