Nasal congestion may be caused by acute rhinitis, nasal sinus tumor, deviated septum and other reasons. 1. Acute rhinitis: this disease is mainly caused by viral infection, when the pathogen on the body, resulting in nasal mucosa congestion, edema, and accompanied by increased secretion, resulting in the nose, nasal congestion, may also be accompanied by runny nose, cough, fever and other symptoms. 2. Nasal sinus tumors: commonly found in inverted papilloma, nasopharyngeal fibrous hemangioma, nasal lymphoma, which leads to obvious increase of nasal secretion and edema of nasal mucosa, and then cause nasal dyspnea and nasal congestion, and may also be accompanied by headache, runny nose and other symptoms. 3. Nasal septum deviation: usually refers to the nasal septum to one side or both sides of the curvature, thus causing obstruction to the nasal cavity, it may cause nasal dyspnea, nasal congestion, and may also be accompanied by headache, nosebleed and other symptoms. Nasal congestion, may also be sinusitis, nasal polyps and other causes, if the symptoms persist, should be as early as possible to consult a doctor, a clear diagnosis, by the doctor to guide the standardization of medication and treatment.