If a child suffers from allergic rhinitis, choose the medication according to the severity of the symptoms of allergic rhinitis in children. If the symptoms are mild, try to choose nasal spray hormone, such as mometasone furoate nasal spray, because the side effects of nasal spray hormone are relatively small and can be used continuously for one month. If the effect is not good, you can then choose oral drugs, such as leukotriene receptor antagonists, commonly used in clinical practice is montelukast sodium granules, montelukast sodium granules can be taken for at least 2-3 months, and generally have very few side effects. If the effect of the first two drugs is not very good, you can add oral dexloratadine syrup, which is an antihistamine and an anti-allergy drug, according to the weight to calculate the amount of treatment, generally oral 2-4 weeks, side effects are also very small.