There is a large quantity of old tailings in Bawdwin Lead-zinc Mine of Myanmar.Based on a detailed investigation on minerals′ composition and further bench tests,an applicable product scheme and the corresponding beneficiation flowsheet,as well as processing conditions were ascertained.A concentrator with a capacity of 500 t/d was built locally.Considering the stacking disorder of old tailings,the processing conditions were further adjusted based on bench tests to ensure that plant can be operated smoothly and stable indices can be maintained.The plant is now running in order and the old tailings resource has been fully utilized.