Through the analysis of the economic development background of Beijing’s mountainous valley areas，it was elucidated that the coordinate relationship between ecological and economic elements of the economic development of mountainous valley Areas；and the main achievements and the existing problems were elucidated.Based on society，ecology and production analysis about the economic of mountainous valley areas，it was summarized that the chestnut resource utilization should be an important work in the economic development of Beijing mountainous valley areas.As well as they were elaborated that the main problems of chestnut utilization，and some suggestions were given about how to efficiently utilize the chestnut resource and stimulate the economic development of Beijing mountainous valley areas.