The purpose of this article was to explore the relationship between State Capability and International Participation, and subsequently analyze the nature of World Order. The statistical methods used to analyze the data comprised ANOVA, strength of association, and regression of dummy variable. Research findings were as follows. First, when participate in building international regimes, state's participation frequency was listed according to state capability and has sequence differences between groups. However, with regard to the international affairs regulation, there is no statistically significant difference. Second, results indicate that there is a significant positive correlation between State Capability and International Participation. Finally, Major Powers and Secondary Powers are playing important roles in shaping the nature of world order.