In the construction of a certain sanitary landfill field,based on the engineering geological and hydrogeological conditions,the technological scheme of curtain grouting anti-seepage has been adopted to prevent the pollution on underground water and surrounding environment by leachate from landfill.In this paper the design and construction technology is discussed in detail of the curtain grouting anti-seepage engineering for this sanitary landfill field.The practice indicates that the construction quality of the curtain grouting anti-seepage engineering is good,and it has reached the technical requirements of anti-seepage.At the same time,it shows that curtain grouting technology can be widely used in sanitary landfill field,where vertical anti-seepage is needed.