The treatment of posterior separated dislocation of the epiphysis of the ring finger of the left hand starts with repositioning, and depending on the degree of injury, local support fixation or surgical fixation is carried out. Separated epiphyseal dislocation of the phalanx is the separation of the epiphyseal segment of the phalanx from the diaphysis of the finger. After the trauma, X-ray examination of the finger is carried out first to make a clear diagnosis, and then local anesthesia is applied to the site of separation and dislocation (injection of lidocaine), and the epiphyseal segment is reset manually, so as to make the epiphyseal segment aligned with the diaphysis. If there is no obvious damage to the local ligaments, tendons and blood vessels after the trauma, the finger can be fixed with a brace after the repositioning, and oral painkillers (ibuprofen capsules) can be taken when there is pain, and the patient should be rechecked at regular intervals. If the trauma except epiphyseal separation, accompanied by ligament, tendon and blood vessel damage, surgery is recommended, because after the simple repositioning of the support can not be firmly fixed, need to be surgically fixed internally, after surgery, regular review. Dislocation of the epiphysis of the finger bone is recommended to actively seek medical advice and treatment under the guidance of a physician. The use of medication should follow the doctor’s instructions.