Nasal congestion as soon as you go to sleep may be caused by chronic simple rhinitis. Chronic simple rhinitis is a chronic inflammation of the nasal cavity mainly characterized by swelling of the nasal mucosa and increased secretion. Nasal congestion, secretions as the main symptoms, can also be accompanied by decreased sense of smell, occlusive nasal sound, post-nasal drip, nasal root discomfort, headache and other symptoms. Chronic simple rhinitis nasal congestion characteristics: intermittent and alternating. Intermittent: nasal congestion is reduced during the day, warmth, labor and exercise, and aggravated during sleep, cold and sitting still. During exercise, the whole body autonomic nerve is excited, the nasal mucosa vasoconstriction, nasal congestion is reduced. Alternating: nasal congestion is heavier when lying down, and when lying on the side, the upper side of the nasal cavity is well ventilated, and the lower side is heavier. It may be related to the increased pressure of the internal jugular vein when lying down. Chronic simple rhinitis, treatment first eliminate pathogenic factors, active treatment of systemic diseases, correction of nasal structural problems, such as septal deviation, etc., local application of nasal decongestant, such as 0.5%-1% ephedrine solution nasal drops, 3 times a day, treatment not more than 7 days; glucocorticosteroid nasal sprays, such as fluticasone propionate, etc.; nasal rinsing to reduce nasal secretions. As soon as you go to bed with nasal congestion, there may be nasal polyps, nasal tumors, etc., due to the location and gravity, there can be nasal congestion while sleeping, it is recommended to go to the hospital in time for examination, and follow the doctor’s instructions for treatment.