PROBLEM TO BE SOLVED: To provide a water supply / distribution management system capable of distributing a sufficient amount of water required in each field group while appropriately operating and managing a pump to suppress maintenance costs such as electricity costs. SOLUTION: A field water management device that manages water supply to each field in units of a field group that is an aggregate of fields, and irrigation that manages the amount of water distribution and the water distribution time to each field group via a plurality of water distribution pumps. It is a water supply and distribution management system including a water supply management device, and the field water management device manages the operating state of each field and collects the water supply state information of each field. The required water supply amount calculation unit that calculates the required water supply amount for each field group based on, the water supply control unit that remotely controls the opening and closing of the water tap of each field, and the required water supply amount for each field group are output to the irrigation water management device. A water supply amount notification unit is provided, and the irrigation water management device is provided with a water distribution management unit that manages the number of operating units and operating hours of each water distribution pump based on the required water supply amount notified from the water supply amount notification unit. [Selection diagram] Fig. 3
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