At present eddy-covariance technique(ECT)is considered one of the most reliable methods in measuring CO₂,heat and moisture fluxes.In terms of the method foreign countries have solved the calculation problems of CO₂ or heat and moisture fluxes of forest and farmland ecosystems under the assumption of homogeneous underlying surface,at moment are making efforts to calculate the fluxes of non-ideal underlying surface(real terrain).Application of the ECT in our country is later.Some knowledge on measuring heat and moisture fluxes by using the ECT has been accumulated,but measuring CO₂ is still in the stage of collecting data.Under the demand of our country's natural ecosystem,environmental diplomacy and the sustainable development of social economy,the future emphases should be placed on accurately measuring the temporal and spatial variations of CO₂ and revealing its dynamic mechanism.The problems and possible solutions to the eddy-covariance are presented and the deserved research field is also put forward in this paper.