Abstract: In this study, ten postpartum Guizhou Black Goats were selected to record the weight changes of their lambs after sucking the breast milk every 5 days. The intake breast milk of the lambs was considered as the milk yield of the female goats. The results showed that the average daily milk yield of the Guizhou Black Goats during postpartum 60 days was （464 ±22） g; the lactation peak appeared in postpartum 30th day;during postpartum 30 days, the milk yield of the Guizhou Black Goats was slowly increased, but it began to gradually and slowly decreased with the extension of postpartum time;after the postpartum 45 th day, the daily milk yield was relatively rapidly reduced.