Exposed nostrils are usually not self-correcting and can be corrected by surgical procedures such as incision of the nostrils to reduce the size of the nose. Nasal incision is a surgical procedure to reduce the size of the nostrils by opening the edges of the nostrils, removing excess nasal cartilage and hypertrophied soft tissue, and then suturing the incision to the inner surface of the nose to reduce the size of the nostrils. It is usually effective in improving the exposed nostrils and the treatment effect can be maintained for a long period of time. Before undergoing surgery, you should consult your doctor in detail and actively communicate with him/her. Also complete preoperative tests, including routine blood tests, coagulation function, four items of infection, electrocardiogram, psychological assessment and other tests. Those who have inflammation around the nasal tissues. Those with acute sinusitis, allergic rhinitis flare-ups, and history of acute nasal trauma within 3 months. Those who have lesions in vital organs such as heart, liver, kidney, and blood and immune system. Those who are not psychologically prepared for the surgery or have too high expectations for the surgery. Women during menstruation, pregnancy and breastfeeding. People with scarred body. People with psychological disorder or mental abnormality are prohibited from surgery. Patients with exposed nostrils should go to a professional hospital for detailed consultation and decide whether to have the operation corrected according to their actual situation.