Slaughter performance and meat quality of crossbred F1 from South Africa Mutton Merino × Northeast Fine Wool Sheep were studied in the paper.12 weaned lambs were divided into two groups,A and B group,which were grazed with forage to concentrate ratio of 6:4 and 8:2 individually.The results indicated that preslaughter weight,carcass weight,lean meat weight,bone weight and leaf fat weight of B group were higher than A group（P＜0.05）.Compared with B group,the water loss percentage of A group was increased significantly（P＜0.05）.Evaluation of routine meat quality analysis showed that dry matter content of A group was significantly lower than B group（P＜0.05）.Crude protein content of B group was markedly higher than A group（P＜0.01）.Crude fat content of A group was markedly higher than B group（P＜0.01）.Unsaturated fatty acids content of B group,including linoleic acid,linolenic acid and oleic acid,were markedly higher than A group（P＜0.01）.Saturated fatty acids content of A group,including stearic acid and palmitic acid,were markedly higher than B group（P＜0.01）.In general,lamb meat from B group is good for man.