Contested by 12 clubs, it operates on a system of promotion and relegation with Cambodia Division 1 League.
However, Albirex has announced that they won't participate in 2015 Cambodian League due to financial crisis and replaced by CMAC United.
Boeung Ket Angkor who finished top of the regular season also qualified for the Mekong Club Championship.
They announced these claims with only the two-legged playoff final remaining.
A team can use three foreign players on the field in each game and one as substitution.. Boeung Ket Angkor won 6-4 on aggregate.