This disease, also known as humeral epicondylitis, presents as pain in the external epicondyle of the humerus. It is mostly seen in tennis, table tennis and other sports. This injury is mostly due to chronic strain causing end-stop disease of the tendon of the humeral epicondyle, degenerative changes of the tendon and the soft tissue inflammation under it, limited synovitis of the humeral radial joint, and degenerative changes of the cricoid ligament. In a few patients, the disease is caused by direct impingement. Clinically, the patient presents with lateral elbow pain radiating up and down; inability to lift heavy objects in the hand with symptoms of loss of strength; pressure pain in the lateral epicondyle of the humerus on examination; spasticity and stiffness of the forearm extensors; painful wrist extension resistance; and a positive Mill’s test. The disease can be treated surgically and conservatively. In the early stage of the disease, the treatment should be based on braking or reducing the activities, and avoiding the movements that cause the injury, such as wringing towels and lifting heavy objects as much as possible. If necessary, it can be fixed in a cast for 2~3 weeks or wrapped with an elastic bandage around the proximal forearm to reduce muscle contraction and pulling stimulation. It can also be combined with massage, physical therapy, such as local laser irradiation, as well as local tendon stopping point injection of prednisolone class drugs closed treatment. Chronic strain injury that does not heal: surgery can be considered. Surgical methods such as tendon stop release, degenerative tissue and inflammatory tissue removal are effective. Minimally invasive arthroscopic surgery can also be used for cleanup.