Abstract: Ceratoides arborescens and alfalfa as main forages together with A spartate and A gropyron were used in feeding trials of Sunit lambs in this study. According to the principle of the forage combination ,six treatments were assigned as follows： 100% Ceratoides arborescens, 50% Ceratoides arborescens and 50% Asportate, 50% Ceratoides arborescens and 50% A gropyron, 100% alfalfa,50% alfalfa and 50% Aspartate, 50% alfalfa and 50% Agropyron. The results show that lambs fed with 100% alfalfa have best growth and slaughter performance. The feeding effects of 50% Cerotoides arborescens and 50% Aspartate are better than 100% Ceratoides arborescens, 50% Ceratoides arborescens and 50% Agropyron.