Nasal dyspnea is clinically known as nasal congestion, which may be caused by inflammatory diseases of the nasal cavity, structural abnormalities of the nasal cavity, nasal tumors and other reasons. 1. Nasal inflammatory diseases: acute rhinitis, chronic rhinitis, sinusitis and other diseases, resulting in swelling of the nasal mucosa so that nasal secretions blocked, may appear in the nose. 2. Nasal structure abnormality: deviated nasal septum, reverse curvature of middle turbinate, hypertrophy of middle turbinate and other nasal structure abnormalities may also lead to the emergence of the situation of the nose is not ventilated. 3. Nasal tumors: Nasal tumors such as intranasal papilloma, hemorrhagic nasal polyps, nasopharyngeal fibrohemangioma and other nasal foreign bodies blocking the nasal cavity may lead to nasal congestion and the emergence of the situation of the nose without ventilation. There may be other reasons, such as foreign bodies, etc. It is recommended that the patient go to the hospital and ask the doctor to make a clear diagnosis and treatment.