Yield and nutrition value of about 5 overseas alfalfa species and 5 domestic alfalfa species was comparatively analyzed.The result showed that the yield of M.sativa L.cv.Gongnong No.1 and Gongnong No.2 was highest and nutrition value was better;both yield and nutrition value of M.sativa L.cv.Longmu 801 and 803 were higher than ‘Leafking’, ‘Magna 601’, ‘Farmer's Treasure’ and ‘Haygrazer.’ Yield of ‘Ningmu No.1’ was the lowest,but its nutrition value was the best.Yield of ‘Hopeland’ was higher,but its nutrition value was the lowest.