Abstract: Landfill is one of the main approaches for municipal solid waste treatment, and landfill site is a main emission source of greenhouse gases nitrous oxide (N₂O) and methane (CH₄). As a high-efficient trace greenhouse gas, N₂O has a very high warming potential, with a warming capacity 296 times of CO₂, and has a long-term stability in atmosphere, giving greater damage to the ozone layer. Aiming at the researches in the control of N₂O emission from municipal solid waste landfill sites, this paper summarized the characteristics and related affecting factors of the N₂O emission from the landfill sites, and put forward a series of the measures adaptable to the N₂O emission control of  present municipal solid waste landfill sites in China. Some further research focuses on the control of N₂O emission from the landfill sites were also presented.

Key words: municipal solid waste landfill site, N₂O emission, greenhouse gas.