Nasal irrigation should not be excessive, 1-2 times a day is appropriate. If the mucous membrane of the nasal cavity is particularly dry, it can be increased by 1 time. If you wash the nose excessively in one day, the water rinses the nasal cavity many times, which will stimulate the nasal mucosa and easily damage the nasal mucosa, which is not good for the nasal health. The correct way to wash the nose is to sit or stand with the patient’s head slightly tilted forward, insert the front end of the nasal rinse with nasal rinse solution into one nostril gently, hold the patient’s breath temporarily and gently squeeze the nasal rinse with your hand so that the rinse solution can be rushed into the nasal cavity quickly and flow out from the other nostril, alternating between the two sides. During the rinsing process, pay attention to the nasal rinsing 1-2 times a day, and rinse with moderate pressure to avoid complications. Do not talk while flushing to avoid choking and coughing. Do not blow the nose hard after rinsing to avoid bleeding from the nasopharyngeal cavity caused by excessive force. It is recommended to use saline to wash the nose. It is recommended to use 37℃ warm water close to body temperature for saline preparation to avoid irritation of nasal mucosa by too cold or too hot. If the nasal symptoms are more serious, hormonal rinses such as dexamethasone can be added appropriately under the guidance of a doctor. Those with severe nasal congestion can also use ephedrine nasal drops first and then rinse. At the same time, it should be noted that nasal rinsing is only an auxiliary means, and in case of rhinitis, sinusitis and other diseases, medical attention should be sought in time for treatment.