Nostril collapse due to cleft lip and palate needs to be treated by lip and palate repair and nose repair. 1. Cleft lip and palate surgery: Cleft lip and palate is a congenital developmental abnormality, which needs to be repaired through surgery first, and may require cleft lip repair, cleft palate repair surgery, and orthodontic treatment, alveolar bone fracture repair surgery, and other subsequent surgeries after the child is 9-11 years old and his/her permanent teeth have fully erupted. 2. Nasal prosthesis: Nasal prosthesis can be performed to improve the nostril abnormality caused by cleft lip and palate. Nasal prosthesis can be performed to repair the collapsed nostril, so that the nostril can become complete and normal. The collapsed nostrils of cleft lip and palate need to be treated several times, and different patients have different treatment plans, so it is recommended that patients with collapsed nostrils of cleft lip and palate should seek medical treatment in time.