Abstract: Abstract:We develop the Taylor rule in open economy according to the benchmark Taylor rule and response function of international monetary policy. Through comparisons and analysis we take USA, Japan and EU as sample countries and conduct the empirical analysis of China＇ s monetary policy in open economy in the framework of expanding Taylor rule. The results show that in the increasingly open world China＇ s monetary authority should not neglect the influence of USA in the process of designing its own monetary policies.