The UNPKO has an important role in dealing with conflict resolution in many part of the world and bring the security back to normal. In this regards, the constitutional basis of the UNPKO can be seen in Chapter Six and Seven of the UN Charter. A a country which embraces value of liberty and in order to creat orderliness and worldpeace, Indonesia has been actively involved in the UNPKO since 1957. Based on this, it can be argued that Indonesia's role in the UNPKO is relevant with the constitution of the republic.