Through the analysis of several blood paramiters (indexes) that were closely related to feed (daily ration) conversion of beef cattle, the results showed that the content of INS(Insulin), TAA(Total amino acid), LAA(Limiting amino acid)and GH(Growth hormone) in the blood would reach the maximum when if the addition of Allium sativum ranged from 66g/headㆍday to 84g/headㆍday and Akkuyn sadtium ranged from 0.3g/headㆍday to 0.4g/headㆍday.