Dehumidifier can not only effectively improve the humid environment to achieve the ideal humidity, but also remove the mold brought by the humid environment. Widely used in homes, archives, libraries, computer rooms, precision instrument rooms, material storage warehouses, basements and other places that need moisture protection, so that books, calligraphy and painting, material machinery, precision equipment, food and so on. Can avoid damp and mildew, and create an ideal space for production and life. First of all, in the choice of home dehumidifier, we should choose the small one instead of the big one. Moreover, the dehumidifier should not be used in dead corners, because it will cause short circuit of air flow and fail to achieve the required dehumidification effect. In addition, the dehumidifier should be placed on a solid and flat ground to avoid vibration and noise, and at the same time avoid direct sunlight or close to heating appliances. Secondly, the doors and windows should be closed before the dehumidifier runs, so as to avoid humid outside air entering the room and affecting the dehumidification effect. If there is no need in use, try to reduce the number of doors and windows opening and closing. In addition, placing the dehumidifier in the basement can avoid the occurrence of damp in the basement, effectively keep the basement dry and protect all kinds of articles and equipment stored in the basement. When the dehumidifier is used in the distribution room, it can keep the distribution room dry and improve the safety of the distribution room. Of course, there are many wonderful uses of dehumidifiers to be discovered by users, and with the continuous improvement of people's requirements for life and air quality, dehumidifiers will be more and more widely used and become a rare good helper in life.