The objective of the paper was to evaluate the impact of microwave stimulation of bean seeds on their germination process. Laboratory tests were carried out in 2012-2014 with the use of certified bean seeds (Phaseolus vulgaris L.) of Igołomska cultivar. Shortly before sowing, bean seeds were radiated with microwaves for 10, 30 and 60 seconds. Microwaves came from a magnetron which operated with 100 W power and produced waves of 2.45 GHz frequency. The germination process was described and parameters, which define the sowing value of bean seeds, were determined. Germination ability, relative germination ability (Maguier's index) and average germination time (Pieper's index). Fresh and then dry mass of plant mass were determined. The obtained results allow the statement that microwaves modify the germination process of bean seeds.