In order to probe the ecological adaptability of foreign alfalfa varieties in the midwest of Jilin Province. 14 Danish alfalfa varieties were used as materials with 2 domestic varieties as the control in the experiment, and 10 characters such as overwintering, fall dormancy and forage yield were studied by randomized block design for two consecutive years. The results showed that foreign alfalfa varieties had no advantage in overwintering and forage yield compared with domestic alfalfa varieties, and showed poor overwintering and low forage yield generally, that indicated these foreign varieties could not adapt to the climate and soil conditions in the midwest of Jilin Province.However, foreign alfalfa varieties showed good characteristics such as upright plant type and consistent characters among individuals, which can be used as good alfalfa breeding materials in China.