Abstract: In this paper, based on analysing a large amount of research work about hydroconsoli-dation of loess of the country, the authors proposed problems that need to be studied. In the first part of the paper, the authors developed the theoretical relation between the coefficient of hydrocousolidation and the deformation modulus of loess. In the second part, it is considered for the nonlinear behaviour of loess in hydroconsolidation. Furthermore, a calculated program is proposed and finally, a computed example is given.