The present work was performed with a view to evaluate the effect of package of soybean seeds, cultivar UFV-10 (Uberaba), with different initial moisture content on the viability of seeds during the storage. The seeds were produced in basic seed multiplication fields at CEDAF-Florestal-MG in the agricultural year 93/94. They were dried to the natural until they reached 11,2; 8,6 and 6,8% of moisture and packed in 5kg packages of transparent polyethylene (50cm x 70cm x 0,25cm), three sheet multiwall paper, cotton, woven polypropylene and new jute bags. These seeds were stored in the seed preparing laboratory of the Department of Plant Sciences at the UFV for 16 months, from June, 1994, under environmental condition (uncontrolled). Every four months, were made determinations of the moisture content of seeds by the stove method at 105oC±3 oC and evaluations of physiological quality by means of germination test, TTZ (class 1-5) and seedlings emergence. At 12 and 16 months? storage, the polyethylene package as compared with the other packages, favored the keeping of the viability of the seeds with 6,8 and 8,6% of moisture being extremely damaging to the maintenance of the seeds with 11,2% of moisture.