A humidifying and cooling draught fan wet curtain device and a control method. A wet curtain and draught fans are disposed on the same side of a greenhouse of the device, so that the layout of a traditional wet curtain draught fan is optimized, sun shading of the draught fans on the interior of the greenhouse is reduced, and the daylighting performance and space utilization rate of the greenhouse are improved. The volume of fresh air entering the greenhouse and the volume of circulating air in the greenhouse are adjusted by means of angle change of an air inlet side window baffle, so that the purpose of precisely adjusting and controlling the temperature in the greenhouse is achieved, and the defect that the temperature in the greenhouse dramatically changes when the traditional wet curtain draught fan is started and stopped is avoided. By means of a positive pressure type cooling design, entrance of pathogeny and insect sources of greenhouse crops are reduced. Air is supplied by means of ventilation pipelines, so that the temperature and humidity in the greenhouse are evenly distributed. The greenhouse humidifying purpose is implemented by means of inner circulation of air in the greenhouse and the wet curtain. Feedforward type control is used in the control method, so that the precision of temperature and humidity control is improved. The humidifying and cooling draught fan wet curtain device can be widely applied to greenhouses with high environment control precision and good cooling and disease and insect prevention effect.La présente invention concerne un dispositif de rideau humide de ventilateur de tirage d'humidification et de refroidissement et un procédé de commande. Un rideau humide et des ventilateurs de tirage sont disposés sur le même côté d'une serre du dispositif, de sorte que la disposition d'un ventilateur de tirage à rideau humide traditionnel est optimisée, l'ombrage du soleil des ventilateurs de tirage à l'intérieur de la serre est réduit, et la
