Bone lengthening surgery usually refers to broken bone augmentation surgery, if the surgery is not standardized or postoperative care is not standardized, there will be certain sequelae, some sequelae will lead to serious dysfunction of the limb, the main sequelae of bone lengthening surgery mainly include: 1, nail hole infection, if the nail hole disinfection is not standardized, there may be nail tract infection, in serious cases may cause osteomyelitis; 2, bone lengthening after the lower limb force line change, both lower limbs are not equal in length, which will cause the patient to walk with limp and pain. For the prevention of this sequelae, should be regularly reviewed, timely adjustment of the force line; 3, neurovascular injury, usually bone lengthening surgery lengthening range within 10 centimeters, lengthening time of about 1 year, if too fast or too long to lengthen the lower limbs, it may lead to neurovascular damage, serious limb paralysis; 4, surgical scar will affect the aesthetics of the patient’s lower limbs. Bone lengthening surgery must be strictly controlled by the indications for the surgery, if the bone lengthening surgery is done simply to increase the height, it needs to be considered carefully.