Control method for drying system and drying system

The invention relates to a control method for a drying system and the drying system. The drying system is used for the drying room and comprises an air supply device, a heating device and a humidifying device, at least one temperature sensor capable of detecting the dry-bulb temperature and the wet-bulb temperature is arranged in the drying room, and the control method comprises the steps that a drying program is executed firstly, and then a cooling and dehumidifying program is executed; the control method further comprises the steps that the heating device and the humidifying device are kept closed, the air supply device is kept to operate at the initial rotating speed, and the dry-bulb temperature in the drying room is obtained; comparing the dry-bulb temperature with a preset dry-bulb temperature, and controlling a heating device based on a comparison result to adjust the dry-bulb temperature to reach the preset dry-bulb temperature; when the dry-bulb temperature reaches a preset dry-bulb temperature, acqu