A multiuser supercharged temperature-regulated water-saving device belongs to the technical fields of regulating water temperature of a water heater in advance, supercharging and supplying water for multiple users, and saving water. A regulation group supplements cold water for a hot water tank by a connecting module so as to acquire hot water of the hot water tank, cold water, hot water and pipe water mixing temperature regulation, circulating temperature regulation and automatic temperature pre-regulation are conducted in a temperature regulation module of the regulation group, so as to supply warm water for belonged user groups; and a plurality of regulation groups supplement cold water for a plurality of hot water tanks by a plurality of connecting modules so as to acquire hot water, and each regulation group regulates warm water in advance so as to supply to the device of the belonged user group. The device mainly comprises b connecting modules (45), c regulation groups (51) and a hot water tanks (1), wherein b is of a natural number from 1, 2, 3,....N, c is of a natural number from 1, 2, 3,....N, and a is of a natural number from 1, 2, 3,....N. The device has the advantages of being capable of leading a plurality of users to share a plurality of hot water sources and separately use warm water without mutual interference, being capable of conducting automatic temperature regulation and synchronous supercharging, being wholly automatically anti-freezing, using hot water in power failure, and having no water waste in a temperature regulation process.