The refractory gold ore in Yunnan exhibits characteristics such as fine grain size,high content of encap-sulated gold,and high organic carbon activity.This ore belongs to the category of refractory carbonate gold ore containing poor sulfides.The research conducted experiments to study the effects of different grinding fineness,types of reagents,and dosages on the beneficiation indicators of this ore.The results showed that with the cyanide leaching-flotation combined process,the gold grade of the cyanide leaching tailings was 1.45 g/t,with a gold recovery rate of 21.62 %.By using the cyanide leaching-flotation combined process,the mixed concentrate obtained had a gold grade of 13.79 g/t,with a total gold recovery rate of 76.46 %.These results have guiding value for the treatment of similar types of ore.