Allergic rhinitis is a chronic reactive inflammation of the nasal mucosa caused by an allergic reaction after exposure to allergens, not an inflammation caused by pathogen infection, so there is no need to use anti-inflammatory drugs. Commonly used drugs for allergic rhinitis include antihistamines, decongestants, anticholinergics, and glucocorticoids. 1. Antihistamines can quickly relieve allergic symptoms such as nasal itching, sneezing and nasal hypersecretion, and commonly used drugs include cetirizine and loratadine. This kind of drugs may have adverse reactions such as drowsiness, and should be prohibited if there is allergy to this product. 2. Nasal decongestants are often used as auxiliary drugs to relieve nasal congestion, commonly used drugs are hydroxymetazoline. Atrophic rhinitis patients are prohibited, and if rebound nasal congestion, dizziness, allergic reactions and other serious adverse reactions occur during the use of the drug, the drug should be immediately discontinued. 3. Anticholinergic drugs can reduce nasal mucosal secretion, play a role in reducing nasal secretion, commonly used isoproterenol bromide and other drugs. It is forbidden for those who are allergic to this kind of drugs, and the common adverse reactions include dry mouth, elevated intraocular pressure, etc. It should be used with caution in patients with narrow-angle glaucoma tendency, prostate hyperplasia or bladder cancer neck obstruction. 4. Nasal glucocorticosteroids can reduce the inflammatory reaction of nasal mucosa, and the adverse reaction of local medication is less, often using budesonide nasal spray. Allergic to this type of drug is prohibited, such as the emergence of bronchospasm, allergy, etc., immediately stop using the drug. If you have allergic rhinitis sneezing, itchy nose, nasal congestion and other symptoms, it is recommended that patients seek medical attention in a timely manner, under the guidance of the doctor to use the drug, and to carry out tests to clarify the allergens, and at the same time pay attention to avoid contact with the relevant substances in daily life, to prevent rhinitis attacks.