In the winter in the south, it is very dry with the air conditioner on, so people often use humidifiers, but the incorrect use of humidifiers can lead to lung infections and affect everyone’s health. Long-term use of humidifiers, so that the humidity in the room increases, and bacteria or some microorganisms in the humid environment is easy to grow, long-term in this environment, easy to lead to lung infection, and clinically we call humidifier pneumonia. Some friends in the humidifier to add tap water, tap water inside some substances, through the role of atomization, inhaled into our lungs, easy to lead to lung infection, and ultrasonic nebulizer radioactive substances have a certain impact on pregnant women, whether teratogenic is not clear, pregnant women are best not to use humidifiers. And for people with arthritis, humidifiers can aggravate their condition. And according to a survey in South Korea, in 1994-2011, a total of 670,000 people suffered from humidifier pneumonia, of which 16,000 people died, so improper use of humidifiers, the harm caused is also very serious. That for the frequent use of humidifier friends pay attention to it, if there is a cough, cough, chest tightness, fever and other discomfort, to rule out whether the humidifier pneumonia, and then to stop using the humidifier, and promptly to the hospital for medical treatment. Use of humidifiers several precautions: 1, the humidifier can not be used without interruption, which will make the environment too humid, not good for health, it is recommended that 2 hours to stop for a period of time, and open the window ventilation; 2, the humidifier can not use tap water, tap water has many minerals, the humidification process can produce pollution, it is recommended to add pure water or boiled tap water; 3, the humidifier should be cleaned often, regular cleaning, can Remove the bacteria or mold inside; 4. Humidifier in the humidifier is prohibited to add other substances at will, can cause pollution. That for friends who are worried about using humidifiers, you can put more greenery or put a pot of water at home, dragging the floor, can relieve the dryness of the room.