A blocked nose at night may be caused by chronic simple rhinitis, posterior nostril polyps and other diseases, which need to be controlled by medication, surgery and physiotherapy according to the different diseases and causes of the disease and improve the symptoms. 1. Chronic simple rhinitis: there will be alternating nasal congestion or intermittent nasal congestion, which will be alleviated during the day or after activities, and aggravated at night after sitting for a long period of time, which may lead to nose blockage at night once you go to bed. You can use ephedrine saline, regulate the use of furosemide nasal drops for nasal drops; you can also use procaine solution in the inferior turbinate or nasal mound closure, or do acupoint therapy; you can also take infrared irradiation, ultrashort wave diathermy and other physical measures. 2. Posterior Nostril Polyp: Posterior Nostril Polyp, no obstacle when inhaling, will feel nasal congestion when exhaling, may cause symptoms of nose blockage at night when sleeping. You can choose nasal glucocorticoid spray, such as fluticasone propionate nasal spray; conservative treatment is ineffective, you can take surgical treatment to remove nasal polyps. If your nose is blocked when you sleep at night, you need to consult a doctor, identify the cause of the problem, follow the doctor’s instructions for medication and treatment, and avoid abusing drugs.