This paper focuses on the attractive effect of innovation resource through international trade and foreign investment. It sets up theoretical and empirical model and tries to analyze the differences of attractive effects between trade, investment and government policy. With the help of Keynesian cross macroeconomics model and C-D productive function, this paper analyzes the formation of attractive effects. Basing on the theoretical analysis, it further sets up panel data model to do empirical study. After getting the estimators, this paper tries to figure out the issue that how developing countries culminate and keep the innovation resources by comparing the effect value. The results present that FDI, both inward and outward FDI as well as exports do have significant, active attractive effect. Nevertheless, imports have negative attractive effect on innovation resources. As regard for government policy, there are mixed effects. The policy inspiration is that developing countries should emphasize the FDI and exports to promote innovation resource accumulation actively and eliminate imports’ negative influences.