Sichuan Province is an important hydropower base in China. It has played an important role in national economic and social development，energy conservation and emission reduction，optimizing energy structure and supply，and coping with climate change. In view of the ecological and environmental problems of hydropower projects in Sichuan Province，such as water and soil loss，the water reduction or dehydration river sections，the generation of excavation spoil，and the formation of water level fluctuating zone，this paper integrates key technologies for the construction of eco-friendly hydropower projects，such as river ecological flow guarantee measures，comprehensive utilization of excavation spoil and ecological restoration technology in engineering disturbed areas，so as to provide guidance for the planning，scientific research，supervision and intelligent water conservancy construction.