When you sleep with your nose on the left side, your left side will not be able to get through. If you find that the nasal septum is deviated and facing the left side through examination, you can take active treatment for this structural abnormality, and general treatment, drug treatment, and surgical treatment are often adopted. 1. General treatment: pay attention to nasal hygiene, can use saline to wash the nose; do not dig the nostrils. If other nasal diseases are combined, we should actively treat the original disease. 2. Drug treatment: If nasal diseases such as rhinitis, nasal polyps, sinusitis and deviated septum are involved in this symptom, the primary nasal disease should be actively controlled. Glucocorticosteroids such as fluticasone propionate nasal spray can control nasal inflammation well, and antibiotics such as cefaclor can be used to treat combined bacterial infection. 3. Surgical treatment: general septal deviation does not need surgical treatment, because when patients with septal deviation have repeated symptoms of nasal congestion, snoring, and headache, and conservative treatment is ineffective, surgical treatment can be considered, such as endoscopic submucosal correction of the nasal septum surgery. Sleeping on the left side of the nose on the left side can not pass, may also be huge nasal polyps, nasal tumors, etc., it is recommended to consult a doctor in a timely manner to clarify the diagnosis, the reasonable use of medication and the choice of treatment methods should be in accordance with the doctor’s instructions.