A runny nose is damaging to the body if it flows too much. For example, if patients have a lot of runny nose, they will inevitably have a non-ventilation of the nose, and if they have a non-ventilation of the nose, it will easily lead to breathing with the mouth instead, and they may have a dry mouth and a dry tongue. If there is a large amount of runny nose, there may also be a situation where the nose flows out from the throat called nasal reflux, and the patient’s throat will also form inflammation, and the patient will have a foreign body feeling in the throat, which affects life. If there is no ventilation for a long time, it will lead to the lack of oxygen in the head of the patient, especially when sleeping, the quality of sleep of the patient becomes poor, and the patient always feels tired during the day, so patients with frequent runny nose should go to the hospital for detailed examination to clarify the specific causes, and then actively go to the symptomatic treatment will improve the symptoms.