It is important to measure and estimate turbulent flux in surface layer for study air-land interaction. The data of radiation flux and CO2 concentration in fine weather from 10 January 2007 to 14 October 2010, in Hefei have been analysed statistically. The characteristics of season variation and diurnal of albedo and net radiation flux have been obtained. The experiment of surface energy budget shows that there are about 40% energy closure gaps in daytime. The data from 2007-2010 show that CO2 concentration in winter,spring,autumn and summer is 735 mg·m-3, 704.4 mg·m-3, 701.8 mg·m-3, and 692.6 mg·m-3 respectively. The turbulent fluxes estimated by dissipation methods and measured by eddy correlation have been compared.