Nose blocked dead completely can not breathe, commonly due to dry air, adenoid hypertrophy, chronic hypertrophic rhinitis, nasal septum deviation. 1. Physiological reasons: for example, dry indoor air, resulting in nasal mucosa dry formation of dry scabs caused by nasal congestion, resulting in breathing. 2. Adenoid hypertrophy: patients with adenoid hypertrophy blocking the posterior nostrils may also cause nasal congestion, resulting in inability to breathe. 3. Rhinitis: patients with chronic hypertrophic rhinitis caused by turbinate hypertrophy may also experience nasal congestion and inability to breathe. 4. Deviated nasal septum: some patients with bilateral deviated nasal septum or compensatory hypertrophy of inferior turbinate may suffer from nasal congestion. For unknown reasons for the nose blocked dead completely unable to breathe patients, should go to the regular hospital in a timely manner, as soon as possible to clarify the cause of the disease, and under the guidance of the doctor for the appropriate treatment or therapy.