Nasal congestion, one of the symptoms of various nasal diseases, is most commonly caused by inflammation of the nasal mucosa. Its nasal mucosa is congested and swollen or even hypertrophied, causing narrowing of the nasal passages and impeding breathing. Old nasal congestion is usually combined with the presence of a twisted nasal septum or/and enlarged turbinates, seen in various intra-nasal conditions such as rhinitis, rhinovestibulitis, sinusitis, posterior nasal tract stenosis, and nasal polyps. Another most common cause of nasal congestion is allergic rhinitis. After getting cold and flu or contacting allergens, it is easy to have a stuffy nose and runny nose. The most important thing to relieve nasal congestion is to unblock the nasal passage. 1, topical unblocking the nasal tract, dealing with nasal mucosa edema drugs, you can choose ephedrine nasal drops, saline, glucocorticoid drugs. The most common ones are furosemide nasal drops, saline water nasal spray, mocamisone nasal spray, etc. (specific medication needs to be combined with clinical symptoms, subject to the treatment plan of the doctor in the interview). 2, common oral anti-cold drugs, such as ephedrine tablets, pseudo-malmefene tablets, etc. Some antihistamines, such as loratadine and cetirizine, can also relieve nasal congestion. 3.For deviated nasal septum, you can choose surgical treatment, the most common microwave treatment. 4, nasal congestion symptoms, often accompanied by increased secretions in the nasal cavity, you can choose nasal rinse, the nasal mucosa surface of inflammatory substances and allergens and inflammatory secretions rinsed away, reduce the inflammatory response of the nasal mucosa, can also make the nasal congestion relief. There are many other causes of nasal congestion, such as deformity, swelling, dry crust, etc. Therefore, frequent nasal congestion should not be treated as a cold, but requires an ENT consultation to find the cause and then actively treat the symptoms.