For alternating and intermittent nasal congestion after changing sleeping posture, it is likely to be caused by nasal diseases, such as chronic hypertrophic rhinitis and deviated nasal septum. It is recommended to first improve the nasal endoscopy to observe the structure of the entire nasal cavity from front to back and the color of the mucosa to determine the specific type of treatment. For hypertrophic rhinitis, medication is the main treatment in the early stage, the most important is the glucocorticoid nasal spray, which has good anti-inflammatory and anti-allergic effects, and can eliminate the swelling of the mucous membrane, which is not easily absorbed systemically and does not produce systemic side effects, so it is very safe and can be used safely for about one month. Auxiliary saline rinsing of the nasal cavity can clear the source of irritation and inflammatory secretions in the nasal cavity, reduce the swelling of the mucous membrane and promote further recovery of its function. For those who are still ineffective after medication, surgical treatment can be chosen. If the nasal septum is deviated and there are recurrent nasal congestion symptoms in general, it is recommended to choose surgical treatment. Because nasal septal deviation is a structural abnormality that cannot be recovered by medication, surgery is the best treatment option.