The use of saline rinsing of the nasal cavity in most rhinitis is beneficial to promote the flow of nasal secretions, soften dry crusts, and also promote the recovery of mucosal function and facilitate the ventilation and drainage of the nasal cavity and sinuses. It is best to be able to use warm saline, which should not be too cold, too hot or too concentrated, as it may lead to further damage to the nasal mucosa and aggravate the symptoms. When flushing the nasal cavity, it is best to do it unilaterally and to breathe with the mouth open to avoid choking and coughing due to discomfort as the water enters the process downward. The force should also not be too violent. If the pressure is too high, it may cause pain in the ear through the eustachian tube and even lead to otitis media or perforation of the eardrum.