This paper focus on numerical analysis of strain and stress holding stage realized during a pressuremeter test. The aim of this study is to highlight the effect of the viscous behavior of soft clay on the response of the soil during this kind of tests. In this way different simulations are performed using to model implemented in the finite element code Plaxis: the soft soil model, which is an elastoplastic model, and the soft soil creep model which is an extension of the soft soil model that take into account creep behavior of the soil. The effects of consolidation and creep on the tests results are pointed out.