The order was not used during the Khmer Rouge period and was reinstated on 5 October 1995 by Royal Decree No.

[1] It is conferred primarily on foreigners who have rendered distinguished services to the King and to the people of Cambodia, particularly in the field of external relations and diplomatic services or, as a token of friendship.

The badge of the Officer and Knight are worn on the left breast.

The Royal Order of Sahametrei was established by King Norodom Sihanouk on September 9, 1948.

It was reinstituted by Royal Decree No.1095/01 on 5 October 1995 by King Norodom Sihanouk.