In the article under the traditions of blood brotherhood and oath taking in ancient Turks has been put forward in a historical perspective, The scope of the work comprises the emergence of these traditions and their continuity within the present Turkish cultural environment. They live in the present-day Turkish society with little innovation. A chronological method of scrutiny has been followed by using the archeological findings and written historical documents. Types of taking an oath such as blood brotherhood, reconciliation or calling down curses have been examined. The practice of blood brotherhood goes back to the Scythians. The initial examples of the oath of reconciliation were seen among the Asian Huns. Calling down curses on the other hand were seen in more recent times. There are at least two persons in the practice of blood brotherhood while in the practice of curse, there is only one person who calls down curses upon himself/herself. Those blood brotherhood or reconciliation practices that took place between tribes or states used to be performed as gorgeous ceremonies in which only the representatives of the parties had participated.