Abstract: The birth weight of Zhongwei goat lamb under stabling conditions from 2004 to 2010 was analyzed. The results showed that the birth weight of lamb from 2004 to 2010 was very close and the difference was not significant（P 〉0.05 ）. The birth weight of male lamb in 2007 increased by 12.87%, 12.04% ,3.37%, 10.83%, 10.04% and 10.83% than other years respectively. And the birth weight of female lamb in 2007 increased by 8.88%, 11.02%, 1.43%, 5.22%, 11.46% and 2.55% than other years respectively. The birth weight of male lamb in the same year was higher than that of female lamb, without significant differences （P 〉0.05 ）. The birth weight of male lamb during 2004-2010 was increased by 5.02%, 7.87%, 6.84%, 8.87%, 3.36%, 10.27% and 0.70% than that of female lamb.