A disposal process of UASB-CASS treatment is proposed in the light of the features of a leachate from urban house refuse landfill. The results prove that after the process , the index of NH_ 3 -N , COD_ cr , BOD_ 5 in the leachate perivds are up to the second standard of“Effluent limits of leachate form house refuse landfill” in standard for pollution control on the lendfill site for domestic waste( GB16889-1997).