Diplomacy is a reflection of the values of nations and peoples, their cultural and civilizational specificities, political choices, and their religious precepts and traditions. It is a portrait of the past, a reflection of the present and a vision of the future. Any form of diplomacy is built around the principles governing the political structure of the State it represents, whose interests it serves and whose entity in embodies abroad .Diplomacy can be defined as the art and science of conducting international relations .Diplomacy according to the Islamic Shari'ah is one of the best ways to show the Islamic values, merits and advantages in conducting international affairs with non-Muslims. This research article explores the principles and tools of diplomacy used by Prophet in the first Islamic State of Madinah, and also to analyze the foundations and objectives of Islamic diplomacy.