Dien Bien is a mountainous border province in the North-west of Vietnam. It has just been established according to Resolution No.22 of the fourth meeting session of eleventh term National Congress.
Dien Bien has total area of 9,554.107 km2, located at the latitude of 20o54' – 22o33' North, longtitude of 102o10' – 103o36' East.
It is adjacent to the new Lai Chau province in the North; Son La province in the East and North-east; Van Nam province of the people's repubic of China in the North-west with the 38.5 km long border; Luong Pha Bang and Phong Xa Ly provinces of the people's democratic republic of Laos in the South-west with the 360 km long border.