This summer, a patient with cough and fever was admitted to the ward. After examination, it was found that he had been using a home ventilator for a long time for sleep apnea treatment, and some time ago he went out for a 2-week trip, and the ventilator had been left at home with the last water stored inside the humidification tank. When he returned home from the trip, he didn’t pay attention to the respirator and went to bed directly, and as a result, he started to cough non-stop, have difficulty breathing and fever in the morning, and was finally diagnosed with a respiratory tract infection. The patient then realized that the water in the original humidifier was cloudy, and this cloudy water often represents a breeding ground for bacteria, fungi, and other microorganisms. In addition, I often find in my clinical work that some patients have a lot of oil stains and mold in their masks and lines, which are potential health hazards. Therefore, the correct use and maintenance of home ventilators is a very important issue, not only related to the normal operation and service life of the machine, but also closely related to the user’s own health. The following is an introduction to the use of home ventilator precautions: 1, mask: (1) every morning with a wet towel to wipe the mask and skin fit parts (2) weekly diluted neutral detergent water cleaning (avoid acidic or alkaline detergents), and then rinse clean (3) self-use of the mask as long as you keep clean the general chances of infection is relatively small, do not need to disinfect often. If necessary, you can make 75% alcohol wipe disinfection once, but alcohol is easy to cause the mask material aging, not recommended for frequent use. (4) After cleaning the mask, put it in a cool place to dry naturally, avoid sunlight or high temperature drying. (5) do not use the mask, do not close it in a sealed plastic bag to prevent the growth of bacteria, should be wiped and put in a dry and ventilated place can. 2, pipeline: (1) every 2-3 months with diluted neutral detergent water to clean once (should avoid acidic or alkaline detergent) (2) pipeline cleaning and put in a cool place to dry naturally, do not sun or high temperature drying; pipeline to completely dry before connected to the respirator. 3, filter membrane: (1) Some ventilators have a dark colored coarse filter membrane at the air inlet outside the body, which can be rinsed once a week with water, and after washing, use a dry towel to absorb the water and then put it into the machine. Generally, it is necessary to replace one piece in 6 months of use. (2) Some ventilators also have a fine membrane, not washable, not reusable, should be replaced every 2 weeks – 1 piece per month (according to different ventilator manual requirements). 4, wetting device: (1) the use of distilled water, pure water or cool white water, daily renewal of water, 3-5 days to change the water (2) cleaning the wetting tank once a month, cleaning must be plugged sensor tube or take out the water box to clean separately; then dry the external water with a dry towel before use. (3) the best cleaning and wiping is completed, let the water box natural shade dry a little, can reduce the breeding of bacteria. 5, move the respirator: it is best to remove the wetter and then move to prevent the water in the wetter from flowing back into the host caused by damage to the machine. 6, regular maintenance: after using a certain period of time should go to the company to do system maintenance, and then once a year to maintain good performance of the respirator in long-term use. Generally in the formal channels to buy the respirator maintenance and use of after-sales services such as consulting will be better.