Recently, our joint surgery department successfully carried out the first ankle arthroscopic surgery in Gaoming area. At present, the injured patient is recovering well after the operation, and the ankle pain is obviously reduced, and she is very satisfied with the operation result. The patient, Huang**, 27 years old from Guigang, Guangxi, was admitted to the hospital because of the swelling and pain of the right ankle joint caused by an accidental sprain at work. After careful examination of the patient’s ankle joint, Dr. Li Bei found that the patient’s ankle joint was obviously unstable. Combining the medical history and physical examination with the admission X-ray, it was initially judged that the patient had a rupture of the anterior talofibular ligament of the outer ankle caused by a typical rotational inversion injury, and there were clear indications for surgical repair. In order to let the patient get the surgical treatment as soon as possible, Dr. Tao Hui, the chief expert of MRI room, and Dr. Tan Jianyi gave up their lunch break to do the MRI examination of the ankle joint for the patient personally. The results showed that the patient had a complete rupture of the anterior talofibular ligament and damage to the heel-fibular ligament. After full communication with the patient, with the support of the chief of the department, Dr. Guangpeng Au, Dr. Jun Xiao and the whole medical staff, the treatment team consisting of Dr. Li Bei and Dr. Wei Liu successfully performed ankle arthroscopy on this patient in the afternoon of December 16. During the surgery, the arthroscope clearly identified the damage caused by the trauma to the ankle joint: cartilage damage to the medial wall of the talus and synovial hypertrophy and hyperplasia. To address the cause, the ankle arthroscope was used to shave the hyperplastic synovial tissue, treat the cartilage injury and then repair and strengthen the anterior talofibular ligament. The patient’s ankle pain was significantly reduced on the second day after surgery. Although ankle sprains (enthesopathy) are common in orthopedic outpatient clinics, some patients are left with ankle instability, recurrent sprains, swelling after activity, pain, ankle stiffness and traumatic arthritis due to insufficient attention and improper early management in the past. The extent and degree of cartilage damage can be examined directly under the microscope. It is also possible to repair the ruptured anterior talofibular ligament and heel-fibular ligament in one stage to restore stability to the ankle joint. In addition, ankle arthroscopy can also be used to treat persistent ankle pain of unknown origin, osteochondral fractures or free bodies, exfoliative osteochondritis, synovial inflammatory lesions requiring synovial biopsy or synovectomy, and other disorders. This surgery is not only the first ankle arthroscopy in our hospital, but also marks a new breakthrough in minimally invasive sports medicine technology in our joint surgery department.