Abstract: In this paper, The following problems are discussed: 1) The various methods to calculate the amount of evaporation. 2) Results of the calculation of the amount of evaporation and the loss of heat for evaporation of more than 2pp stations in China by the method of N. A. Bagrov based on the component values pf radiation and heat balance given by the authors and other related climatological data. 3) The configuration of the time and space distributions of the amount of evaporation and the loss of heat for evaporation in China.