The last time on the world most popular method waste management have been disposal landfill. At present in accordance with the law a landfill is a construction designed to dispose waste and from the technological point of view disposal is a process of depositing waste to reduce its impact on natural environment and people, which should be carried out in a controlled manner. Consequently, waste disposal poses a ¿potential¿ threat to the environment. Talking above into consideration in many country on the world waste management is according the baste available technology- MBT (mechanical- biological treatment before disposal) . It is worth mentioning that MBT is widely applied in Europe. It seems that at present, a significant number of MBT facilities are being built, developed and modernized. This technology has many advantages and is environmentally friendly. The book contain : the role of a landfill site, impact of waste disposal on the environment, landfill in different country and a mechanical biological treatment (mechanical processing, biological processing), product of MBP, effects (advantages), the newest technologies solutions, function in the world.