Usually, cleaning the mouth after nebulization, that is, after rinsing the mouth, a short rest can be eaten, and will not affect the efficacy of the drug. Nebulized inhalation medicine is a positive and effective means of respiratory treatment, with certain anti-inflammatory, cough, asthma and other effects, the drug is mainly absorbed locally through the oral mucosa or airway mucosa to quickly achieve the therapeutic effect. However, after nebulization, the mouth must be rinsed and cleansed before eating, so that the drugs in the mouth do not enter the digestive tract with swallowing, thus producing side effects. In addition, patients should drink more water and apply face cream before nebulization to reduce the side effects of drugs on the face, and the need to clean the face after nebulization is also for this reason. If the sputum in the patient’s airway is sticky after nebulization, gentle and repeated coughing may be appropriate to try to cough up the secretions in the airway to promote the dissipation of respiratory inflammation. In addition, the nebulization treatment time is not as long as possible, usually around 10-15 minutes is sufficient to avoid irritation of the respiratory mucosa.