歐洲協調從1815年維也納會議開始，到1854年克里米亞戰爭爆發，運作時間不過短短的四十年，不過它成為國際安全合作制度的一個最佳範例。歐洲協調證明，透過制度的作，國家可以避免安全困境的發生與惡，克服缺乏資訊所陷入的不確定性難題，減少誤解與誤判的不必要危機，改善國家安全決策的品質，還可以強化本國在國際社會中的權力地位。 歐洲協調式的安全制度，具有一定的規範、行為規則與決策程序。這些規範建構了參與國的身份認同，約束國家的行為，更透過實踐，強化彼此維持國際穩定的承諾。多邊協調的危機管理方式，構成歐洲協調式安全制度的行為規則。歐洲協調更透過決策程序，管理國際體系中的安全議題，有效地穩定國際體系中的權力分配問題。歐洲協調終結主要的原因，在於制度化的貧乏，未能使安全制度所產生的規範、行為規則與決策程序，產生持續性的作用。 檢視歐洲協調的創建、運作與消逝，突顯制度所建立的規範、規則與程序，對國家行為的影響與作用，不過也揭示規範等概念性因素之作用，仍有待引入更多新的研究方法，從體系、國家與個人等三面層次，進行深入的討論，才能夠對國家的安全行為，呈現更清晰的面貌。

The Concert of Europe, lasting from 1815 to 1854, is an excellent example of international security institution. Through the function of international security institution, states could overcome the uncertainty in the international community, reduce the effects of misperception and misjudge, enhance the quality of foreign policy decision-making and solidify national position by improving state’s power. There are set of norms, behavior rules and procedures in security institution like the Concert of Europe. In the practice of the Concert of Europe, one could discover that a set of norms had forged the participant state’s identity, constraint state’s behavior and maintain the promise to stabilize international order. The mutual crisis management in the Concert of Europe also constituted the set of behavior rules. The Concert of Europe’s procedure are reflected in the way like collective decision-making, localization of regional conflict and the fixing Power’s interest sphere. However, the poor of institutionalization became the major reason of the Concert of Europe’s vanishing. The Concert of Europe did work but it could not concert the set of norms, rules and practices into a culture and identity which are central to the continuing of international security institution. It is obvious that the institution influence state’s behavior. International security is also an issue that could be managed. However, the Concert of Europe also reveals that conceptual items have an important role in constituting state’s behavior.