Mo Muong is a heritage containing the values of many types of folklore including literature, performance, music, dance, theatre, rituals, and folk knowledge. In particular, the words of “Mo” (a type of folk rite practised at funerals or rituals) are literary works with a huge capacity, containing human, cultural and historical values as well as the outlook on life and cosmology of the Muong ethnic people. However, Mo Muong is facing many challenges in preservation and promotion of its values.