Runny nose is mostly caused by cold and allergic rhinitis, which is caused by over-sensitive nasal mucosa. What can be done to control the runny nose as soon as possible? Medication can be given, because runny nose is mostly caused by nasal mucous membrane sensitivity, anti-inflammatory and anti-allergic drugs can be given. For example, leukotriene receptor antagonist montelukast sodium, antihistamine epalrestine, loratadine, the combination of the two can effectively control the runny nose. In physical aspect, you can wear a mask and give a small amount of napkin rolled into a ball to block the nasal cavity to make the nasal cavity warm and moist, and change the small napkin ball several times repeatedly, which can effectively reduce the symptoms of nasal mucous membrane sensitivity, this method is simple, effective and belongs to physical therapy, which can be promoted. At the same time, try not to eat cold drinks, exposure to cold air, exposure to odors, to avoid repeated aggravation.