If the symptoms of cold and flu runny nose are mild, you do not need to take drugs, pay attention to warmth, rest and other general treatment can be. If the symptoms are severe, drugs such as loratadine or pseudoephedrine can be taken to relieve the symptoms. Colds are mostly caused by rhinovirus, coronavirus, adenovirus, etc. They may manifest as nasal congestion, runny nose, cough, sore throat, etc. As the disease progresses, the nasal discharge may become sticky, accompanied by dulled sense of taste, breathlessness, hoarseness, etc. If the symptoms are mild, no medication is needed. If the symptoms are mild, generally there is no need to use medication, and the disease can generally heal itself in 5-7 days. If the patient sneezes frequently and has a lot of nasal discharge, oral antihistamines such as loratadine and phenylephrine can be taken, or drugs such as pseudoephedrine can be taken to relieve congestion and edema of the nasal mucosa in patients with colds and reduce the symptoms of runny nose. For the common cold, generally do not need to take active antiviral drug treatment. If the influenza virus causes influenza, antiviral drugs such as oseltamivir can be used. During colds, you should pay attention to warm measures, keep indoor air circulation, appropriate physical exercise, avoid overwork. Runny nose can also be caused by other diseases, such as allergic rhinitis. If the symptoms are not relieved or aggravated, it is recommended to consult a doctor in time, improve the examination, clarify the cause of the disease, and standardize the treatment under the guidance of the doctor, so as to avoid delaying the condition.