Modern society is more and more responsible regarding environment. Therefore, landfill leachates processing is considered as one of the most important environmental problems because of structure complexity, which causes multiple toxic mechanisms upon living organisms and ecosystem. The big challenge for the present day is optimal landfill leachates processing which would reduce negative effect on environment before oozing in sewage disposal systems and natural aquifers. Conventional methods are being substituted with modern technologies like pressure membrane processes: microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO). The goal of this term paper is an overview on characteristics of pressure membrane processes for processing of landfill leachates from landfills. This term paper shows evaluations of listed processing procedures based on chemical oxygen demand (COD), ammonia removal efficiency (NH3-N), organic substances in total, heavy metals etc. Reverse osmosis gives the best results in removals of organic substances, COD, ammonia and heavy metals valued from 90 to 99%. While those values are lower when nanofiltration, and especially ultrafiltration and microfiltration are being used, and they are eliminated as primary methods of landfill leachates processing. To get prescribed quality of output effluent, it is necessary to use a combination of pressure membrane processes and other preprocessing methods because of the landfill leachates structure complexity.