After the cold is over, the nasal congestion and runny nose may be related to the congestion and edema of the nasal mucosa has not returned to normal or secondary sinusitis, chronic rhinitis, etc., you need to consult a doctor to clarify the cause of the disease, and under the guidance of a professional physician to carry out the appropriate drug treatment. Cold is a kind of upper respiratory tract infection, caused by viral infection. After other symptoms of cold and flu are relieved, the congestion and edema of the nasal mucosa may not necessarily return to normal immediately, so symptoms such as nasal congestion and runny nose may continue for some time, and patients with nasal congestion and runny nose caused by this condition do not need special intervention, and can be relieved more naturally. It is also necessary to consider the possibility that the patient may have secondary sinusitis after a cold. It is recommended to consult a doctor in time to clarify the diagnosis, if necessary, the application of antibiotics, glucocorticoids and other medications, commonly used drugs such as amoxicillin clavulanate potassium, budesonide. In addition, some patients suffer from chronic rhinitis before the cold, the symptoms of nasal congestion and runny nose will continue for a longer period of time after the cold is cured, at this time, ephedrine nasal drops can be given to relieve the symptoms. The use of the above drugs needs to be under the guidance of a professional physician, so as to avoid the improper use of drugs leading to adverse consequences.