Environmental economic principles were utilized to analyze and evaluate the environmental achievements and benefits of measures to construct ecological and clean-type small watersheds in Beijing City. The value calculation model of efficiency of land renovation, forest ecological, wetlands, grass planting, sewage and litter management and engineering measures were developed to compute the benefits of each practice. The ecology and assets values of construction measures for 3 typical small watersheds in Changping District were analyzed. The results indicated that ecological value were concentrated in the ecological restoration area in Guozhuang and Dashipo small watersheds, which covered 99.99% and 99.42% of its total ecological value, respectively, but it was centralized in ecological management area for 96.99% in Yangtaizi. Nevertheless, the assets values of all the 3 small watersheds were centralized in ecological management area, and the percentage of the total assets were 99.67%, 96.16% and 91.89%, respectively.