Abstract:Contents of lead、Zinc and sulfur in a lead-zinc sulfide ore in eastern Yunnan are 3.56%、12.41% and 30.01%，associated valuable silver is 28.3g/t。This paper investigates the property of the lead-zinc ore，and based on the characteristic of raw ore，beneficiation experiment was carried out. It can realize the lead concentrate grading at 60.16% with a 82.76% recovery，and containing silver 222.3g/t，silver recovery rate is 37.96%，zinc concentrate grading at 52.57% with a 91.96% recovery，and containing silver 62.8g/t，silver recovery rate is 48.27%，through the Pb-S bulk flotation and re-election of zinc process.