Abstract: Xishuangbanna Dai national minority is an agricultural nationality with glorious irrigation history. The Dai national minority tradition water conservation irrigation system has the characteristics of ecology，religion，distinctive quality of irrigation technology，and so on, but the Dai national minority tradition irrigation institutional framework has the characteristics of water conservation management system, the normalizing water conservation management, the combination of regulations and invisible management，both of them provide good model for the protection of nowadays irrigation water source forest，for the perfection of irrigation system.