An experimental study was carried out on the flotation of a quartz-vein-type gold-bearing ore.The flotation parameters and reagent regime were optimized through grinding fineness tests,dispersant type and dosage tests,copper sulfate dosage tests,and collector type and dosage tests.Under the optimal flotation process conditions,closed circuit experiments can obtain gravity and flotation concentrates with gold grades of 351.22 g/t and 23.55 g/t,respectively.The comprehensive recovery rate of gravity and flotation is 91.34 %,and the beneficiation indicators are relatively ideal.