The main reason why rhinitis patients can use water to rinse, but the water here refers to medical saline, not tap water, etc. Washing the nose with water is useful in the following ways: 1. The nasal cavity is filled with a large amount of secretions, which contain viruses and bacteria, which is one of the reasons for the recurring attacks of rhinitis. The rinse can flush out the nasal cavity secretions, viruses, bacteria, etc. to reduce the attacks of rhinitis and alleviate the symptoms of rhinitis. 2. Some patients with rhinitis have dry nasal mucosa and a large number of dry crusts in the nasal cavity, the rinse can flush out the crusts to keep the nasal cavity moist and avoid drying of the nasal mucosa. 3. In short, the correct rinse for rhinitis patients is useful for rhinitis recovery.