Some patients prescribed nasal sprays go back and do not know how to spray the nose, or indiscriminate nasal spray, resulting in poor efficacy, not only causing a waste of drugs, but also prolonging the patient’s suffering. Nasal spray is generally a throwing agent, such as Renolcort, co-solvadex, nasal spray, etc., should be used before blowing out the nasal snot, so that the spray into the nasal cavity is not sprayed on the mucus and does not work. Head slightly tilted forward, the direction of the nasal probe upward, placed in the nasal cavity after the probe slightly to the outside, gently inhale before spraying into the process of inhaling snap nozzle, the drug can be distributed to the maximum in the nasal cavity.