Nasal congestion during the day may be caused by deviated nasal septum, nasal polyps, or allergic rhinitis, and needs to be treated according to the different diseases. 1. Deviated septum: At present, the nasal congestion caused by this disease can be completely cured by surgical treatment. 2. Nasal polyps: Nasal polyps can block the nasal cavity and lead to nasal congestion, which should be treated with surgery to remove the polyps and improve ventilation. 3. Allergic rhinitis: oral anti-allergy drugs combined with hormone nasal spray treatment, such as cetirizine combined with fluticasone propionate nasal spray treatment, can control allergy symptoms, relieve the local inflammation of the nasal cavity, reduce the symptoms of the nose. It is recommended that patients seek medical attention to identify the cause, understand the cause of the cause of treatment is the key, the above drugs need to be used in accordance with the doctor’s instructions.