There are two common causes of nasal obstruction in the morning: First, chronic rhinitis and sinusitis, i.e., getting cold or eating spicy food before going to bed, exposure to tobacco and alcohol, and nasal obstruction in the morning during the cold period. Second, allergic rhinitis, may be in contact with allergens or cold when sleeping, as well as after waking up because of more dust mites, will also lead to nasal ventilation, but may also be accompanied by runny nose, itchy nose and other symptoms, it is best to go to the hospital to do a rhinoscopy, after a clear diagnosis can be considered symptomatic treatment.