Constant-temperature draught fan control method and constant-temperature draught fan

The embodiment of the invention provides a constant-temperature draught fan control method and a constant-temperature draught fan, relates to the field of draught fans, and solves the problem that when exchange between indoor air and outdoor air is conducted by a conventional draught fan, the temperature of air entering an indoor environment cannot meet the predetermined requirement, so that the temperature of indoor air is too low. On the basis of the conventional draught fan, the constant-temperature draught fan comprises a heating device and a temperature detecting module. The heating device and the temperature detecting module are both connected with a control module. The heating device is arranged on the side of an indoor air inlet. The temperature detecting module is arranged between the heating device and a heat exchanger, and is used for detecting the temperature of air in the indoor air inlet. The control module is used for receiving the temperature, detected by the temperature detecting module, of a