To evaluate the effects of hidric and saline stress at germination and vigor of soybeans with high and low vigor (Doko e UFV-10, respectively) there was provided an experiment in laboratory. The seeds were placed in rools of germitest paper soared with solutions of sodium chloride, calcium chloride, calcium sulfate, sodium sulfate and manitol having osmotic potencials of 0, -3, -6, -9, -12 and -15 atm to germinate. The vigor of the seeds were evaluated by the lenght of the radicel and hypocotyl and by the dry matter of the seedling. The salts affected most the germination of the seeds than the manitol, at higher concentrations there was a lower percentual of germination, whose effects were more accented for low vigor seeds. For high vigor seeds, the presence of salts such as manitol caused a reduction at the values of the dry matter, lenght of the radicel and hypocotyl, that was intensified by the increase of the concentration. For the seeds with lower vigor, lower concentrations of salts caused an increase at the values evaluated, possibily by the reduction of the speed of soakness of the seeds, avoiding injuries to the embryo.