The invention provides a solar heating floor which comprises a solar heat collecting unit and a hot water storage unit, wherein a heat energy output end of the solar heat collecting unit is connected with the hot water storage unit. The invention is characterized in that a heat energy output pipe end of the hot water storage unit is connected with a heating floor unit, and the heating floor unit is provided with a heat radiating plate. When sun light is available at ordinary time, the heat collecting unit can be used for collecting heat of solar energy, hot water absorbing the heat is stored in the hot water storage unit, the hot water storage unit is externally connected with a heat energy output pipe for transmitting the hot water, the heating floor unit is provided with the heat radiating plate which is internally provided with a hot rod, and one end of the hot rod is arranged in the heat energy output pipe for absorbing and conducting the heat of the hot water in the heat energy output pipe to the heat radiating plate to enable the heat radiating plate to generate heat; and when sunlight is not available, an auxiliary heating unit can be used for heating water to keep supplying hot water for the heating floor unit so that the heating floor unit generates heat to keep floors warm.