Disclosed is a secondary water supply system peak shifting water replenishing dispatching management platform. A plurality of secondary water supply systems are each provided with a set of data collecting and emitting control equipment, each data collecting and emitting control equipment comprises a water pressure switch, a single-chip microcomputer module, an edge calculating control unit, and anelectromagnetic water valve installed on a water tank and connected with a municipal tap water pipe network pipeline; a manager is provided with an upper computer, a cloud platform data receiving system, a big data analyzing unit, a production and decision dispatching unit, an asset distribution database unit, an open platform data interface, a role management unit and an application unit are installed inside the upper computer, the manager is further provided with a visualized video and data monitoring platform, the application unit comprises a manager mobile phone side APP and a computer side program. It is ensured that water inside the water tank is sufficiently recycled, water is sufficiently supplemented to the water tank at a non-peak period, the water quality is improved, water generated by drainage is reduced, and energy consumption generated by drainage is lowered, and the whole water consumption safety of residents is improved through maintenance, cleaning and management ofthe water tank.