On the basis of the theory of diffusion and convection of radon , the predent paper has formulated migration equations in arbitary media as well as in rock and soil near the surface , and set up a model for ground - atmosphere exchange of radon 摘要本文根据氡运移的扩散与对流理论建立了任意形状介质中氡运移方程、大地岩石、土壤中氡的运移方程和大地大气氡交换理论模型。