A lead zinc ore from Inner Mongolia contains 2.01 % lead and 2.07 % zinc.The lead and zinc mineral is dominated by sulfide.According to the ore property and condition test,the process of zinc inhibition and lead flotation is determined.The test results show that when the more selective new type collector B09 is used to recover zinc minerals and the under the decided optimial conditions,the closed-circuit test obtains the lead concentrate with lead grade 60.38 % and lead recovery rate 86.10 %,and the zinc concentrate with zinc grade 45.10 % and zinc recovery rate 85.02 %.