The whistler consists of a main unit, a humidifier, a power supply, a tube, a mask, and a headband. The host of the whistler and the humidifier are linked together, and the air will be heated and humidified after passing through the humidifier, and then blown into the nasal cavity. 1, the tightness of the hood is critical, too loose will run air, the whistle machine needs to compensate for the pressure, the patient will feel uncomfortable; 2, the hood and tube should be cleaned regularly. Because the skin will be oily, the inhalation tract will also have an odor; 3, the water of the chemistry to be replaced daily, do not fill a little every day into the, easy to breed bacteria, blowing into the inhalation tract easy to cause infection. Wet chemistry is best to regularly brush disinfection; 4, filter cotton to be replaced regularly, it is responsible for blocking the air in the dirty things, dirty air blowing into the airway is likely to cause other problems; 5, some patients with a cold nose blockage serious, it is recommended that the acute phase of the cold do not force to wear the whistle machine, will feel the pressure top panic. Some patients are also too lazy to wear a whistler after drinking, but at this time should wear it, alcohol has a central inhibitory effect, will aggravate the sleep apnea, wear a whistler will make the chances of danger reduced.