The invention discloses a backpressure heat and power cogenerator and solar generator combined heat generating system and a scheduling method thereof. A user adopts two heat supply modes, namely a water radiator mode and a heat pump power consumption mode, wherein the hot water is supplied by a heat and power cogenerator unit, the power is supplied by both the heat and power cogenerator unit and a solar generator together. After a comprehensive scheduling control device detects the energy supply and the power consumption condition of the user in a certain time period, a prediction is made for a period in the future; and based on the prediction, the scheduling is performed, so the warming output hot water flow is reduced under a condition that the power supply and heat supply are satisfied, and the heat is compensated for by consuming power; the power-consuming heat supply can overcome the drawback of hot water warming and increase load in a power trough period; and thus, the wind power generation and heat and power cogeneration are combined, and according to the waviness of wind power generation, the change of the output of heat and power cogeneration and the change of the power consumption condition of the user are regulated in the same test period and regulation period to realize the wind power equivalent smooth output on the user side.