The main purpose of using saline nebulization is to allow patients with excessive phlegm to dilute the phlegm so that it can be easily coughed up and to keep the airway open. If the patient’s sputum is not easily coughed up, saline nebulization can be used, but care should be taken to ensure sterility. If coughing is frequent, it is recommended to add bronchodilators, including beta agonists and cholinergic receptor blockers, such as terbutaline or ipratropium bromide, and, if necessary, a combination of inhaled hormones, such as beclomethasone propionate and budesonide. Hypertonic saline can also be nebulized when the sputum is thick, but this method tends to increase airway secretions, so prompt aspiration care is necessary. Risk tips: Pay attention to the use of the nebulizer, rationalize the dosage under the guidance of the doctor, and follow the doctor’s advice on the dosage of saline. When nebulizing inhalation, pay attention to closing the mouth and inhaling through the nose, avoiding open-mouth breathing.