The invention relates to a solar magnetic-suspension central-air-conditioning heat supply system. The system comprises a solar hot water system, a magnetic-suspension central-air-conditioning heat supply system body and a plate type heat exchanger. The solar hot water system comprises a solar thermal collector and a thermal collection water tank, and the thermal collection water tank is connected with the solar thermal collector. Gas-fired hot water boilers serve as supplementary heat sources of the solar hot water system and are connected with a constant temperature water tank. The side face of the constant temperature water tank is connected with the thermal collection water tank, and the bottom of the thermal collection water tank is connected with the constant temperature water tank through a water supplementing pipeline. Three outlets are formed in the bottom of the constant temperature water tank, wherein one outlet is connected with the tops of the gas-fired hot water boilers through a corresponding pipeline, one outlet is connected with the top of the constant temperature water tank through a corresponding pipeline, and another outlet is connected with the plate type heat exchanger through a corresponding pipeline. User water-use equipment is connected to the pipeline through which the corresponding outlet is connected with the top of the constant temperature water tank. By means of the solar magnetic-suspension central-air-conditioning heat supply system, on the premise that the heat supply effect and comfort of users are guaranteed, remarkable social and economic benefits are achieved.