In Viet Nam, the diversification of CGPRT crops is the main thrust of poverty alleviation in remote and mountainous areas with new opportunities in the market. However, the sustainable development of these commodity chains is in question due to the lack of integrated policy for value chain development and assuring the participation of the poor in the value chains. Two case studies of cassava and maize commodity chains respectively in Yen Bai and Son La provinces suggest ways to encompass these challenges of diversification.