The characteristics and ammonia removal principle of the membrane absorption method is presented and the influences of membrane module/membrane materials,operation mode and salt effect on ammonia removal by membrane absorption method are also described.The applications of membrane absorption method in ammonia removal from landfill leachate are summarized and analyzed emphatically.It is pointed out that the pretreatment on crude landfill leachate is a necessary procedure in removing ammonia from landfill leachate based on membrane absorption method.The further application of membrane absorption method in removing ammonia from landfill leachate can be forwarded through innovation of special purpose separation membrane and membrane module,optimizing process as well as reducing operation cost.