The utility model discloses a solar indoor heating radiator control system and belongs to solar heating devices. Problems of structure and function designs can be mainly solved. The solar indoor heating radiator control system comprises a solar water heater, an indoor heating radiator, an injection pump, an electromagnetic valve, a power supply and a proximity switch. The solar indoor heating radiator control system is characterized in that the solar water heater is usually installed on a roof, hot water flows into the indoor heating radiator through a pipeline and then flows back to the solar water heater through the injection pump and the electromagnetic valve, during usage, the power supply supplies power for the injection pump and the electromagnetic valve, the size of the electromagnetic valve is controlled by the proximity switch, thereby, water flow is controlled, and water overflow of the solar water heater can be avoided. The solar indoor heating radiator control system has the advantages that the solar indoor heating radiator control system is controllable and adjustable, meanwhile, the operation is convenient, the structure is simple, and the service life is long.