In response to a series of problems in the crushing system of the gold beneficiation workshop of Shuikoushan Concentrator,such as high ore content of mud and water,large particle size of crushing products,discontinuous feeding of ball mill,unstable grinding particle size,high equipment energy consumption,and large maintenance workload,technical improvements have been carried out based on the actual site conditions.The crushing system’s low working efficiency problem has been solved,and the particle size of the crushing products has been reduced,achieving the goal of energy saving.The grinding-flotation system has undergone technical transformations,improving the fineness  -0.074 mm of the final ground products from 80 % to 90 % without increasing the grinding classification equipment.The gold content in the tailings has been reduced from 0.41 g/t to 0.30 g/t.The gold separation operation in the flotation system has been merged from two-time cleaning to one-time cleaning,increasing the flotation capacity of roughing,effectively stabilizing the technical indicators of the beneficiation process,and achieving good results.