Seasonal allergic rhinitis may involve medications such as antihistamines, decongestants, leukotriene receptor antagonists, etc. Please follow the doctor’s instructions for treatment. 1. Antihistamines: Use antihistamines such as cetirizine and loratadine as appropriate, which can effectively relieve symptoms such as itching, runny nose and sneezing, but are slightly less effective in nasal congestion. 2. Decongestants: e.g. ephedrine, as an adjunct to relieve symptoms of hypersecretion and nasal congestion. 3. Leukotriene receptor antagonists: such as montelukast sodium, can reduce the inflammatory response of the nasal mucosa. In fact, seasonal allergic rhinitis as far as possible to avoid exposure to allergens is the most effective treatment, so allergens should be identified; daily try to keep the nasal cavity moist, such as usually in a hot bath, breathing warm moist air, helps to relieve nasal congestion. It is recommended that patients strictly follow the doctor’s instructions for medication, not to arbitrarily increase or decrease the amount of medication, and pay attention to the adverse effects of drugs.