There are many causes of nasal congestion, such as colds, rhinitis, deviated septum, etc. For different causes, different measures need to be taken, such as medication, surgery and so on. 1. If the nasal congestion is caused by colds, treating colds is the mainstay, such as taking oral cold spirit granules. It is recommended to buy and use under the guidance of doctor. 2. If the nasal congestion is caused by rhinitis, commonly used local topical drugs such as hydroxymetazoline hydrochloride spray to relieve nasal congestion, and at the same time need to address the cause of the treatment, such as anti-infective, anti-allergic drug therapy. The selection of specific drugs needs to be based on the clinical symptoms of the specialist to make a comprehensive judgment. 3. If nasal congestion is caused by abnormal nasal structure, such as deviated nasal septum and enlarged nasal turbinate, it can be treated with surgical procedures such as nasal septum correction and partial turbinate resection. Nasal congestion may also be caused by nasal foreign bodies, nasal tumors, etc. It is necessary to clarify the cause of the disease and then treat the cause to avoid delaying the treatment time and aggravating the condition.