Landfill methane emission is an important source of anthropogenic greenhouse gases.Its influence on the increasing global greenhouse gas emissions in the entire atmosphere which cause climate effects can not be ignored and it is a serious problem of public nuisance that needs to be solved urgently in the modernization process of the world.The paper summarizes the related formative factors of methane,the present status of waste disposal and methane emission reduction technologies at home and abroad.Methane production is affected by waste characteristics,moisture content,temperature,pH,time,leachate levels and other factors in landfill.The current landfill methane emission reduction technologies include the in situ reduction technique,resource utilization and end control technology.The landfill can achieve the goal of methane emission reduction from the combined effect of various aspects.