Injury to the ulnar nerve is one of the most common clinical nerve injuries, due to fracture of the medial humeral condyle, as well as fracture of the ulnar radius on the nerve damage. Once the injury occurs, it is necessary to promptly remove the triggering cause and repair the damage to the nerve in a targeted manner. After the injury, the main target is the sensation of the hand, as well as the muscle atrophy of the limb, to carry out the relevant exercises, in the fixation time should be timely stimulation of the fingers related to sensory training. Can be appropriate to touch the relatively sharp objects, such as toothpicks, keys and other metal objects, without scratching the hand under the premise of appropriate stimulation of peripheral nerves, so that the nerve damage as soon as possible recovery. Then for the muscle atrophy of the fingers, flexion and extension exercises, wait until the joint fixation is lifted, and gradually from the fingers, palm joint training, transition to the wrist joint flexion and extension training, and even the whole forearm functional exercises, so that the nerve injury brought about by the limb movement and sensory deficits to be restored.