After the ulnar nerve injury occurs, you can exercise by the following methods: 1, active flexion of the little finger and wrist joints, can make the muscle restore active contraction, but also to prevent the stiffness of the joint; 2, the use of elastic bands on the muscles of the ulnar nerve injury site, resistance training, such as resistance flexion of the wrist, flexion of the finger, enhance muscle strength, reverse stimulation of the ulnar nerve to make rapid repair, but also to prevent the ulnar nerve innervation muscles, serious atrophy occurs. Therefore, rehabilitation exercises should be started as soon as possible after ulnar nerve injury to avoid serious adverse consequences and prevent serious dysfunction after repair of ulnar nerve injury, and patients should usually pay attention to the protection of the ulnar nerve travel area to prevent serious injury of the ulnar nerve.