By partial equilibrium analysis,three different scenarios of tariff concessions are set up to simulate trade creation,trade diversion and welfare effects contributed to Asia-Pacific Free Trade Agreement（APFTA） on different livestock products in China,and to further identify different effects on specific sensitive products and tariff reduction processes.The results show that tariff reduction is beneficial to the trade of China’s livestock products,and export growth rate of different livestock products is higher than import growth rate.Tariff reduction reduces China’s tariff revenue and raise welfare income.It is of policy significance for China in a bid for free trade negotiation to raise the international competitiveness of China’s key livestock products.