Mometasone furoate nasal spray is mainly used for the treatment of allergic rhinitis, its main active ingredient is mometasone furoate, which is a topical glucocorticoid drug, mainly with anti-inflammatory and anti-allergic effects. It exerts a local anti-inflammatory effect, and the dose of the drug generally does not cause systemic glucocorticoid effects, but mainly plays a local therapeutic role. This drug is mainly suitable for seasonal and perennial rhinitis in adults and adolescents, as well as in pediatric patients aged 3-11 years. For patients who have had symptoms of moderate to severe seasonal allergic rhinitis, mometasone furoate nasal spray can also play a preventive role, and it is advocated to use this drug 2-4 weeks before the start of the pollen season to prevent allergic rhinitis. In conclusion, mometasone furoate nasal spray mainly has an anti-allergic effect and can be used for the treatment of allergic rhinitis, which is a glucocorticoid drug for topical use and generally does not cause systemic effects.