Abstract: In this paper,using the data of turbulence observation of Huayin Station in Gobi area during IOP of HEIFE,the effects of rainfall forcing on the transport of water and heat in the local climate system of Gobi are analysed.The results show,that the local climate system becomes unbalanced due to the rainfall forcing,that the unbalanced state can return to the balanced state after rainfall through a new adjustment of substance and energy,that the process of the new adjustment can be divided into four periods,that the sensible heat flux,latent heat flux,and water vapour flux are very different with the periods,that relaxation time of the unbalanced state is about four days,and that about two thirds of rainf all are transported into at mosphere by the evaporation of ground surface and the rest may permeate the ground.