Nasal congestion severe inability to sleep is considered to be due to rhinitis, sinusitis, nasal polyps, nasal septum deviation and other reasons. 1. Rhinitis: acute rhinitis condition development, gradually aggravate nasal congestion, caused by the night can not sleep; chronic simple rhinitis nasal congestion is characterized by: intermittent and alternating, during the day, warmth, labor and exercise to alleviate, sleep. Cold, sedentary aggravation, there will be nasal congestion aggravated by the difficulty of falling asleep; allergic rhinitis will also be exposed to dust mites and other allergenic substances during sleep, resulting in nasal congestion and difficulty in falling asleep. 2. Sinusitis: Swelling of nasal mucosa and gathering of secretions in the nasal cavity will lead to severe nasal congestion at night, making it difficult to fall asleep. 3. Nasal polyps: caused by allergic reactions, heredity, nasal cilia dysfunction and other factors, patients usually have no obvious symptoms when polyps are small, and when the size of nasal polyps increases, patients can have severe nasal congestion and can not fall asleep. 4. Nasal septum deviation: Nasal septum deviation to one side, appearing unilateral nasal congestion, in the long run will appear on the opposite side of the inferior turbinate compensatory hypertrophy, resulting in bilateral nasal congestion. If the nasal septum deviation is S-shaped deviation, there will be bilateral nasal congestion; resulting in severe nasal congestion and inability to sleep. In addition, adenoid hypertrophy, nasal tumors, etc., can cause severe nasal congestion, it is recommended to go to the hospital in time to identify the cause of the disease and receive appropriate treatment.