Hydroxymetazoline Hydrochloride Spray is usually used for the treatment of acute and chronic rhinitis, sinusitis, allergic rhinitis, hypertrophic rhinitis in children aged 2-6 years. Hydroxymetazoline Hydrochloride Spray belongs to α-adrenergic receptor agonists, with vasoconstrictive effect, which can promote the vasoconstriction of the nasal mucosa and reduce the symptoms of congestion, and can relieve nasal congestion caused by all kinds of rhinitis and sinusitis, and it is a special drug for children aged 2~6 years old. Hydroxymetazoline Hydrochloride Spray may cause burning sensation, pins and needles sensation, nasal mucosa dryness and other adverse reactions after the use of the product is prohibited for those who are allergic to the components of the product, and is prohibited for patients treated with monoamine oxidase (MAO) inhibitors. The use of drugs should be carried out under the guidance of a physician, it is recommended that patients strictly comply with medical advice.