Cooking stove waste heat recovery control method and system

The invention relates to a cooking range waste heat recovery control method and system. The method comprises the steps that the hot water temperature, the mass flow rate and the temperature change trend of water flow generated in a to-be-recovered area at the current moment are obtained; the historical hot water temperature, the historical mass flow rate and the historical temperature change trend of the water flow in the historical time period or the historical moment are obtained; obtaining a correction factor; inputting the hot water temperature, the mass flow rate, the temperature change trend, the historical hot water temperature, the historical mass flow rate, the historical temperature change trend and the correction factor into a trained temperature prediction model, and determining a first hot water temperature of the water flow at a future preset moment; a temperature threshold value is obtained, and if the first hot water temperature is larger than the temperature threshold value, a first control i