Abstract: Based on the simple process mineralogical studies on a polymetallic sulfide ore with copper of 0.16%，lead of 0.86%，zinc of 2.92%，the technical conditions for recovering the valuable components are emphasized.The closed-circuit test process of copper-lead bulk flotation by one-roughing，three-cleaning and two scavenging，copper concentration by one-roughing，two-cleaning，and one-scavenging，lead concentration by one-roughing，two-cleaning，and one-scavenging，and zinc separation by one-roughing，four-cleaning and two scavenging is carried out.Finally，three concentrates of copper，lead and zinc with Cu grade of 22.17%，Pb grade of 52.19%，Zn grade of 39.15% at a recovery of 75.65%，84.25%，44.63% respectively are obtained.

Key words: Polymetallic sulfide ore, Bulk flotation, Copper-lead separation