The invention discloses a solar energy centralized hot water household pressure-bearing using system. In the system, a solar water heater group is arranged on a roof, wherein the water heater group is formed by connecting a plurality of solar water heaters in series and then in parallel; the first solar water heater in the first row of the water heater group is connected with a water temperature and water level controller; the water outlet of the solar water heater group is connected with a heat preservation and heat exchange water storage tank through an electromagnetic valve with a controller; a plurality of small pressure-bearing heat exchange water tanks are arranged in the tank; each small water tank is provided with a water inlet pipe and a water outlet pipe which are connected witha user; the lower part of the heat preservation and heat exchange water storage tank is connected with a buffer water tank through an electromagnetic valve with a temperature controller and a pipeline; and the water tank is connected with the solar water heater group through a water pump with the controller. The system collects light and adds water on the roof in a centralization way, so that theuse can be complemented; and the buffer tank is arranged for heating circularly and saving energy. The system has the characteristics of household use, no management such as card swiping or the like,and convenient use.