The position values of East Sea (ES), on the map of Asia and the World, were estimated by three categories: physiographic, geo-economic, geo-politic positions. In term of geo-economy, provides the huge natural resources for surrounding nations, and is a key sea route for many countries in the world. Also, the very great difference in economic potentials of its surrounding countries has created many different behaviors for itself. In term of geo-politics related to its position of "crossroads" and "centre", the ES basin is an area of many intersected cultures, occupied by colonial and neocolonial regimes, confronted during the cold war, and possesses a geomilitary position of international importance. For effective exploitation and conservation of res'ources and environment in ESt "cooperation instead of confrontation" is the key objective for all nations in the basin nowadays. In this situation, it is necessary for Vietnam to implement some concrete tasks for suitable utilization of position resources in its sovereign waters.