The fluxes of radiation,heat,water and momentum across the land-atmosphere interface are important for atmospheric general circulation models(AGCMs).These fluxes are subscale and must be parameterized for large scale models.The parameterized fluxes are called land surface parameterizations,which significantly affect the accuracy of AGCMs.Over the past 20 years,as the plant physiological and hydrological development and a number of field observations,the parameterizations have been improved fromsimple and unrealistic schemes into credible representations.Some schemes with advancecd biochemical and ecological knowledge and coupled with climate,oceanic models can describe the biological and physical response of earth system to global changes,such as the increase of  CO₂ concentration.In this paper,we overview the development of land surface parameterizations and the further researches in the field.