Nebulized inhalation therapy, as a special clinical treatment, has its own physical principles, hardware conditions, but currently a bit left out, doctors just prescribe, nurses just add the drug to the nebulizer, after that it is at the mercy of God, as to whether it has been considered where the target location of drug nebulized treatment (small airways? Alveoli?) Has the nurse considered where the target location of the drug nebulizer is (small airways? alveoli?), whether the amount of drug and liquid is adequate, whether the driving gas is sufficient, whether the type of nebulizer is appropriate, whether the nebulizer is properly placed, whether the patient is breathing correctly, and whether the nebulizer has been properly sterilized? I hope to take this opportunity to learn from you and draw your attention to it.