It is generally recommended to wash the nose 1-2 times a day. Nasal wash is to rinse out the secretions in the nasal cavity, but incorrect nasal wash is easy to damage the mucous membrane of the nasal cavity, but aggravate the condition. Therefore, nasal rinsing is only as an auxiliary means of treatment, and can not be used as the main means of treatment, if the patient’s nose is not comfortable, it is recommended that the patient consult a doctor in a timely manner, under the guidance of the regular doctor treatment. Nasal rinsing is only an auxiliary means of treating nasal inflammation, usually with physiological sea salt water or saline nasal wash. Nasal rinsing is recommended twice a day, and the number of rinses should not be too many to avoid damaging the mucous membrane of the nasal cavity. The purpose of nasal wash is to promote the discharge of nasal secretions and reduce the irritation of secretions on the nasal mucosa, thus reducing nasal inflammation. However, if the concentration of the liquid used in nasal wash is too high or the strength of the nasal wash is too strong, the mucous membrane of the nasal cavity will be damaged. In addition, if the nasal wash water enters the Eustachian tube, it may also cause otitis media, so it is recommended to take standardized use under the guidance of specialists, and choose the appropriate rinsing frequency according to the characteristics of the disease.