Abstract: 【Objective】 The purpose of this project is to select the best forage oat cultivars for the dry farming conditions in Balluk Mountain area of Tacheng, Xinjiang by analyzing the agronomic characters and nutritional quality indexes of 21 oat varieties. 【Method】 The experiment was conducted in a randomized block design and repeated three times, with a total of 63 plots.The sowing rate was 240 kg / hm², and the nitrogen application rate was 80 kg/hm².The experiment was 【Result】 The fresh grass yields of Baler II (25.28 t/hm²) and Haymaker (24.53 t/hm²) were the highest than those of other oat varieties (P < 0.05).Compared to others, Lena (12.48 t/hm²) and Denmark 440 (12.25 t/hm²) had the highest hay yield (P<0.05).The dry matter contents of Qinghai 444 (35.70%), Bayan 3 (36.13%) and Lena (36.24%) were the highest than other oat cultivars (P<0.05).The crude protein content of Baler (11.84%) and the ether extract content of Qingyan 1 were the highest than other oat cultivars (P<0.05).Bayan 3 (37.90%) and Sweet Oat (37.62%) had the lowest contents of neutral detergent fiber than other oat cultivars (P<0.05).The acid detergent fiber content of Charisma was the lowest (20.73%).The water soluble carbohydrates content of Bayan 3 (13.15%), the crude ash content of Longyan 3 (8.80%) and the relative feeding value of Bayan 3 (169.25) were the highest than other oat varieties (P<0.05). 【Conclusion】 According to the comprehensive evaluation of six main indexes of agronomic characters and nutritional quality by membership function analysis, Bayan 3, Sweet Oats and Baler of medium maturity are the most suitable varieties for planting.