Heat supply regulation control method, device and system

The invention provides a heat supply regulation control method, device and system, and relates to the technical field of heating equipment. The method comprises the steps that the current outdoor temperature is obtained from an outdoor temperature sensor; heat supply parameters in the residence are obtained from a parameter measuring device, wherein the heat supply parameters comprise the current indoor temperature of the residence, the real-time heat supply amount of the residence, the water supply temperature of the residence and the water return temperature of the residence; according to the current indoor temperature, the real-time heat supply amount, the water supply temperature, the water return temperature and the current outdoor temperature, the valve nozzle adjusting amplitude of the water mixing valve is determined; according to the valve nozzle adjusting amplitude, a control instruction is sent to the water mixing valve, and the control instruction is used for controlling the water mixing valve to