1.Pre-operative adaptation training of the limb should be done. 2.The limb with external fixation frame should be placed properly to avoid improper force and loosening of screws. If loosening is found, inform the medical staff. 3.Keep the nail path clean and dry, and disinfect with iodine volts when necessary. 4.Do the muscle stretching training of the fixed part regularly to prevent local muscle disuse atrophy. 5.If the external fixation frame is found to be loose, inform the medical personnel to deal with it in time. 6.Do not adjust the position of the external fixation frame at will to ensure effective fixation.