the "changmei fresh air system" low-carbon fully intelligent ventilation system independently developed by Guangxi Nanning changmei air purification equipment co., ltd. It is verified that the use of "Changmei Fresh Air System" in the hotel ventilation project can meet the needs of clean and fresh air for daily ventilation in rooms, restaurants, lobbies and entertainment clubs in the hotel. Hotel is a luxurious and decorated public place, which needs shining decoration materials for decoration, but there are hidden dangers in high-grade materials. If it can't be ventilated, it will exhaust the odor of the hotel. The hotel is luxurious and can only be superficial, and customers can only stop looking at it. Hotel ventilation is directly related to the profit of the hotel, and many hotel managers have a headache about it. Many hotels started business immediately after renovation, and closed their houses for a long time, failing to ventilate the rooms on time. After repeated complaints from customers, some hotels just used some adsorbents, sprays and other drugs to control the surface. After a long time, it was full of odor. There are many ways to ventilate traditional hotels, such as getting adsorbents, spraying drugs, etc., opening windows for ventilation on time, installing air conditioners, and cultivating green plants, which have little effect on the indoor air of hotels, and can't meet the needs of customers. The best way to truly achieve hotel ventilation is to install the hotel fresh air system, and then install pipes on the system, so that the pipes can penetrate into each room, use the mechanical ventilation principle of the system to introduce fresh outdoor air, and at the same time exhaust the indoor polluted air in each room of the hotel.