Abstract: :A new beneficiation process of "broken -sorting -screening" are used to effectively separate and comprehensively recover plastic, paste of lead and its grate, from waste lead-acid battery in the wet impacting crusher and water medium fluidized bed separation device which were designed independently. The optimal separation efficiency can be realized by adjusting the crusher hammer number and flow size of the water medium fluidized bed separation device. The results show that: the yield and its recovery of the paste of lead, the grate and the plastic are 73.34 % and 99.97 %, 20.58 % and 98.91 %, 6.08 % and 97.39 % respectively, which can be achieved under the conditions of the 4 set of hammer and 12 m³/h water flow. The method has promising application prospects.