The cause of runny nose may be caused by colds, allergic rhinitis and so on, you can choose to take anti-cold, anti-allergy and other drugs according to the disease treatment. 1. Colds: after a cold, there may be nasal congestion, sneezing, runny nose, cough and other symptoms, it is recommended to take Lianhua Qingdian capsule and other drugs under the guidance of the doctor, and at the same time, pay attention to rest, eat a light diet, and more indoor ventilation, the symptoms of runny nose will be relieved after the cold is well. 2. Allergic rhinitis: if the patient in contact with pollen and other allergens after the symptoms of a runny nose, it may be allergic rhinitis, then you can take loratadine under the guidance of a doctor, cetirizine and other anti-allergy drugs, and at the same time away from dust and other allergens, the symptoms of a runny nose will generally be faster to get better. This symptom is caused by more diseases, need to actively consult a doctor for systematic examination to clarify the diagnosis, and follow the doctor’s instructions to standardize the use of medication and treatment.