Strong water sensitive and broken formation was encountered in drilling construction in Liba gold mine of Southern Gansu, drilling by ordinary wire-line coring tool resulted in low core recovery and low drilling efficiency, the average core recovery rate was 86.5%, the footage per run was below 1 meter, the minimum was only 20～30cm and the average footage per team was about 5 meters. Good drilling efficiency has been achieved by using SYZX96 wire-line coring hydro-hammer, the average core recovery rate, average footage per run and average machine efficiency per month have been improved by 8%, 50% and 17.5% respectively; drilling time increased to about 60%. Based on the application situation, the paper elaborates SYZX96 wire-line coring hydro-hammer about its structure, working principle and the points for attention in operation.