Abstract: [Objective] In this paper, the growth and development of 0-60 days old Xinji fine wool sheep were studied.Because the growth development is faster between birth and 60-day-old lamb, the main aim of this study is to understand the variation process of growth of fine-wool sheep lamb from birth to 60 days of age, so as to provide a theoretical basis for better production in early rearing.[Method]In this study, the weights of birth, 10 days, 20 days, 30 days, 40 days, 50 days, and 60 days of age of 613 Xinji fine-wool sheep lamb at Tacheng sheep breeding farm were determined and analyzed.The growth rules of different day old lambs, and the effects of different groups on the growth of the lambs were analyzed,too.[Result]The results showed that the daily gain weight and relative growth of Xinji fine-wool sheep lamb were the fastest at 0-10 days of age, decreased at 20-50 days of age, and even decreased greatly at 50-60 days of age;the growth process of them could be divided into 3 stages, which were named 0-10 days, 20-50 days, and 50-60 days, respectively.[Conclusion]At 0-10 days of age, lambs grow very fast, so they must be allowed to eat colostrum and the ewes' lactation should strengthened.20-50 days of age is the new gill fine lamb growth period of rapid development, therefore, the feeding and management of lambs should be strengthened too and their nutritional supply must be met.Those in good feeding and management grow fast and daily gain weight is better.