This research aim to know about Indonesia Diplomacy to be a non-permanent member of the Security Council of United Nations. This research is a descriptive research that explain how Indonesia used its diplomacy to become a non-permanent member of the Security Council of United Nations. The method of this research is library research that to collected the data from libraries, book, articles, journal, electronic media and websites. Result of this study explained the purpose of Indonesia become a non-permanent member of the Security Council of the United Nations. This research showed that Indonesia use diplomacy to get support from other countries, Indonesia through its government on bilateral and multilateral interactions, persuade and give reward to other countries to chosee Indonesia tobecome a non-permanent members of the Security Council of United Nations, it would gives advantage for Indonesia.