Lying down the nose is not ventilated get up on the good may be nasal polyps, rhinitis, upper respiratory tract infections and other causes. 1. Nasal polyps: the etiology of nasal polyps is not clear, considerations related to etiologic microbial infections, allergic reactions and other reasons. Nasal polyps are not full of nasal cavity, the patient standing nasal polyps hanging, nasal cavity can have part of the channel ventilation, when the patient lying down with the nasal mucosa piled up together, the patient will appear nose ventilation, nasal congestion aggravated. 2. Chronic simple rhinitis: the nasal congestion of this rhinitis is characterized by intermittent and alternating. Nasal congestion decreases during the day, warmth, labor and exercise, and worsens when sleeping in the cold. It is related to the relative autonomic excitation and vasoconstriction when standing; and the increased pressure of the internal jugular vein and severe congestion of the nasal mucosa when lying down. This will lead to the patient to appear lying down the nose is not ventilated up on the symptoms of good. 3. Upper respiratory tract infection: Upper respiratory tract infection is mostly considered to be caused by pathogens such as parainfluenza virus, adenovirus, hemolytic streptococcus and other infections. Patients will have nasal congestion, runny nose and other manifestations, while some patients in lying down nasal secretions will accumulate in the nasal cavity, patients are prone to nasal congestion manifestations. Patients appear to lie down the nose is not ventilated get up on the good, but also may be caused by other diseases, need to consult a doctor in time, a clear diagnosis.