| In this paper, the development of environmental geotechnical engineering is briefly reviewed firstly, and the contaminant transfer in soil is suggested to be very important in this subject. Secondly, research is done on the contaminant of the liquid and the soil, and the closed relation between them is pointed out. Based on the basic diffusion theory, the general model of the contaminant transport in the environment is presented. The mathematical formula which can clearly describe the transfer process of contaminant in various soil and the analytic solution under representative condition were also presented combining with furthering the transfer model of the soil.Besides, the decision method of every parameter in the presented formula was researched. With the practical engineering, every analytic solution was iconically expressed by engineering mathematical software. Thus, the transfer process and the possible result of contaminant in the soil should be understood further. At the end of the article, with the personal feeling and the profound grasp on this problem, the future research direction was foresighted which may be convenient for the following work. |