Abstract: select 14 QinChuan cattles at random (1.5 year old female and male cattle 4 respectively; 2.0 year old female and male cattle 3 respectively). According to sex, we divide them into two groups. Then we measure their body length, height at wither, breast depth, breast circumstance, hip with and weight, and analysis them. The results show: At 1.5 years old, the hormone level of GH and INS appear difference unremarkably (p>0.05). At 2.0 years old, the hormone level of GH and INS appear difference remarkably (p<0.05). And with the age growing, the GH level appear to descend while INS level appear to ascend. INS and GH level present negative correlation clearly (p>0.05). Analyzing the body composition index, we discovery at 2.0 year old QinChuan Cattle’ breast circumstance is wider , hip grows clearly, body growth rate is relatively slow. But growth rate of muscle is relatively quick. It correspond with the meat cattle growth rules and middle maturity or late maturity characters of Qinchuan Cattle. Comparing the actual weight with partition standard of economic performance, we discovery Qinchuan Catttle still belongs to beef and farm breed. But with present selecting and cultivating present years, Qinchuan Cattle’s weight add greatly.