Abstract: The design and function of the water tendency of the Gezhou Dam's Down Part were introduced.Based on the massive model experiments,mainly about several kinds of recommending projects,after comparing and analysizing some aspects in technology,economy,structure,construction,etc.,here the author proposes the implementation project by appling the plan of the middle dam of the river and digging the upper bottom of the Second River to adjusting the Gezhou Dam's key water-control project.This implementation of the...