To the article results are driven on research of dynamics of change of soil processes in Southern Aral Sea Area. It is set researches, that slow long-term accumulation of salt takes place due to evaporation of pellicle currents of soil solutions in middle and lower part of profile. It is set that due to intensive evaporation of soil moisture and under influence of eolian processes there is carrying away of salts of overhead horizon of soil. The dynamic processes of accumulation of salt of the dried bottom and withering part of delta are related to the change of level and mineralization of subsoil waters, and also with wind activity.