Winter hardiness – is a property of bees‘ families, describing their ability to withstand extreme winter conditions. The aim of our research was to examine the degree of training of different breeds of bees to winter and their hardiness in our conditions. Our results show that during winter the greatest amount of feed spent bee families of Caucasian breed - 7.46 kg, the local bee - 6.26 kg, and Carpathian - 5.32 kg. It was noted that the mass of dry matter in the body of bees ranged from 33.19 to 37.31% of absolutely dry substance from 31.78 to 35.83%, the percentage of combined water ranged on the average on groups of 1.41 to 1.82. Thus, we can note that then there is the combined water in the body of bees, so they are more winter-hardy. In this case, it is clear that the Carpathian breed of bees is better adapted to our conditions and prepared for winter.