The invention relates to the field of intelligent water supply management systems, and discloses an energy-saving peak-shifting intelligent water supply system based on a cloud technology. The energy-saving peak-shifting intelligent water supply system is characterized by comprising pump houses, water storage tanks, water pump units, water supply pipeline assemblies, data acquisition and transmission units, pump house monitoring units, intelligent water tank adjusting and controlling units, hydraulic data monitoring units, water quality monitoring and treatment units, pipe network hydraulic data monitoring units, a cloud platform server and a cloud platform big data analysis module. The energy-saving peak-shifting intelligent water supply system has the beneficial effects that at the moment which is not water use busy hours, the water storage tanks are subjected to regulation and storage as a whole, pipe network water supply resources are optimized and distributed, the instant water demand on a municipal water supply pipe network during the water use busy hours is reduced, the fluctuation range of the pressure of the water supply pipe network is narrowed, fluctuation of the pressure of the water supply pipe network is low, the phenomenon of leakage of the pipe network can be reduced, stable water supply of a water plant system is guaranteed, the rebuilding requirements of the water factory municipal water supply pipe network and the water supply pipe assemblies are lowered, and national water supply resources and ancillary facilities are saved.