Nasal congestion during pregnancy may be caused by allergies, upper respiratory tract infections, chronic rhinitis, etc. It can be treated by fumigation, saline cleaning of the nasal cavity, and keeping away from allergens. 1. Allergy: At this time, you need to stay away from allergens to reduce the stimulation of allergens on the nasal mucosa, thus reducing the symptoms of nasal congestion. 2. Upper respiratory tract infection: at this time, you need to take sufficient rest to improve the body’s immunity, and if the symptoms are more serious, you also need to use antibiotics that minimize the impact on the fetus, such as penicillin, etc. for treatment. 3. Chronic rhinitis: at this time the nasal cavity may appear tissue edema thickening and so on, you can take hot water fumigation, local hot compresses, saline rinse and other physical methods to relieve the symptoms of nasal congestion and airlessness. If there is nasal congestion during pregnancy, it is recommended to go to the hospital in time, under the guidance of the doctor to take reasonable methods of treatment, to promote the relief of symptoms of discomfort.