Ditch the domain in the economic construction in mountain area of Beijing play an irreplaceable role.This research analyzes the importance of ditch domain economy, summarizes the ditch domain results: since the economic construction of Beijing mountainous area ecological environment restoration, farmers living standards improve, more perfect infrastructure, the mountains look brand-new.Put forward the future Beijing ditch domain the trend of the development of the economy: in the context of the integration of the beijing-tianjin-hebei region, tightly grasp opportunities, strengthen infrastructure construction, further expand the industry space, the development of creative agriculture and exhibition of agriculture, enhance service ability, for the integration of the beijing-tianjin-hebei region especially in the mountainous area economic development play a good demonstration and leading role.