Nasal leak syndrome, or postnasal drip syndrome, can be caused by a deviated septum. A deviated septum is caused by uneven development of the bones of the nasal septum, which creates different tensions and leads to abnormal connections, which can lead to symptoms such as nasal congestion, headaches, and nosebleeds. Due to the structural abnormality of the nose, it hinders sinus drainage causing nasal complications such as sinusitis, and is not easy to recover from and tends to aggravate. When deviated nasal septum combines with sinusitis and hypertrophic rhinitis, it can cause obvious postnasal drip syndrome, which is manifested by frequent coughing, coughing up sputum, and foreign body sensation in the pharynx and other symptoms. Obvious deviated nasal septum can be treated with submucosal correction of nasal septum. At the same time for rhinitis, sinusitis and other comorbidities for treatment, can be under the guidance of the doctor to use cefaclor and other anti-infective, nasal spray hormone such as mometasone furoate, saline nasal wash and other treatments. Once the diagnosis of deviated septum is confirmed, it is recommended to see a doctor as soon as possible for evaluation and treatment with the doctor if necessary.