The solar floor heating system is a low-temperature hot water ground radiant heating system, and its structure is mainly composed of solar collectors, a floor heating temperature control system, a hot water storage tank, a water supply tank, a circulation pump and the like. During operation, the solar collector directly heats the water and stores it in the hot water storage tank for use in the floor heating and cooling system. At night, the hot water in the hot water storage tank continuously heats the building through the floor heating and cooling system. Since the law of ground heat radiation is conducted from bottom to top, thereby increasing the indoor temperature and giving a comfortable body temperature, the whole heating has the characteristics of no environmental pollution, no noise and convenient control, and is an inevitable trend of modern social development.