Whether to do nebulization by mouth or nose depends on the way of nebulization, and currently there are oral nebulizer and mask nebulizer in the clinic. 1. Oral nebulizer: oral nebulizer requires the patient to contain the head of the nebulizer in the mouth, mainly through the oral inhalation way to make the drug to the lower respiratory tract, in the process of drug use can be more effective use. 2. Mask nebulizer: mask nebulizer in the structure of the main mask over the face of the way, through the nose inhalation of drugs, to reach the respiratory tract parts of the patient. This way is easy to lead to drug adsorption in the ineffective part, the patient needs to tightly closed mouth, slow breathing, deep inhalation, help the drug fully absorbed. Patients need to be under the guidance of a professional doctor when performing nebulization, and strictly follow the doctor’s instructions on the dosage to be used.