Both nostrils are not ventilated may be acute rhinitis, nasal turbinate hypertrophy or nasal polyps, etc., you can follow the doctor’s instructions to use nasal sprays, oral medications, nasal irrigation or surgical treatment. 1. Acute rhinitis: a common inflammatory disease of the nasal mucosa, common in the upper respiratory tract infection, caused by viral infections, generally symptomatic treatment, nasal congestion is serious patients can follow the doctor’s instructions to use mometasone furoate nasal spray, fluticasone propionate nasal spray, etc. to improve the ventilation of the nasal cavity. 2. Nasal turbinate hypertrophy: clinical manifestations of runny nose, nasal congestion, olfactory impairment, dyspnea and other symptoms, patients can follow the doctor’s instructions to use fluticasone propionate nasal spray or budesonide nasal spray for nasal spray. If the effect of drug treatment is not good, you can consider surgical treatment, such as endoscopic turbinoplasty. 3. Nasal polyps: Chronic inflammatory stimulation leads to proliferation of nasal mucosa, which blocks the nasal passages and leads to narrowing of the nasal cavity. When the polyp is small, you can follow the doctor’s instructions to use beclomethasone propionate nasal aerosol for nasal spray, conservative treatment is not effective, you can choose to surgically remove the polyp tissue in the nasal cavity and sinuses. There are many reasons why two noses do not breathe, the patient should go to the hospital to do the relevant examination, after the cause of the disease is clear and standardized medication and treatment.