Nasal congestion can be seen in rhinitis, nasal foreign bodies, deviated septum and other diseases, and can be treated with general treatment, medication or surgery depending on the cause. Nasal congestion cannot be treated only for nasal congestion, so there is no most effective and fastest way to treat nasal congestion. 1. Rhinitis: should pay attention to avoid contact with substances that cause nasal allergies such as dust, maintain local hygiene and other general treatment based on medical advice can be used loratadine, saline nasal spray, etc., if the acute rhinitis caused by viral infections, pay attention to drink more water, rest, generally do not need special drug therapy. 2. Nasal foreign body: common in children, can go to the hospital in time, under the operation of professional doctors to use nasal endoscopy to remove the foreign body. 3. Deviated septum: it can cause severe nasal congestion, which can be corrected through surgical treatment. 4. Other causes: nasal polyps, nasal tumors and other symptoms of nasal congestion. It is recommended to go to the hospital in time, under the guidance of the doctor for treatment, to avoid delaying the condition.