Epicondylitis of the humerus (commonly known as tennis elbow) is a chronic injury myofasciitis of the extensor digitorum communis tendon of the epicondyle of the humerus. It is a chronic tearing injury of the extensor digitorum communis muscle, especially the radial flexor digitorum brevis, which repeatedly contracts and pulls the muscle starting point, causing cumulative injury. Middle-aged and elderly people also often suffer from this disease. The essence of the disease is chronic injury myofasciitis of the extensor digitorum supercilii tendon, but the disease can also be induced by cold in middle-aged and elderly people, without necessarily having an obvious history of injury. After plantar fasciitis (heel spur), it is the second disease approved by the US FDA for shock wave treatment. 1, indications Local pain symptoms are heavy, the duration of the disease more than 3 months, after other conservative treatment without significant effect, unwilling to surgical treatment, willing to accept shock wave treatment. Local soft tissue without obvious infection and systemic contraindications. 2.Positioning and positioning Generally, the patient is positioned with anatomical markings on the body surface combined with pain points, the affected elbow is flexed, the arm is rotated forward, the pressure point of the external humeral epicondyle and the agonizing pain point of the forearm are palpated and the treatment area is marked. 3.Treatment method The patient adopts a sitting position, and generally adopts a radioactive shock wave treatment machine, and fine-tunes the shock energy from low to high, to the extent that the patient can tolerate it, the energy flow density is 0.10~0.18mJ/mm2, each shock is 2000~3000 times, each treatment interval is 5d~7d, 3~5 times for a course of treatment, after the shock wave treatment, attention must be paid to rest, and the pain can be relieved after the treatment. The pain can be relieved before doing the treatment again. 4, the mechanism of action of radiation pneumatic ballistic shock wave is a new, effective treatment of tendon end disease in recent years. Through the mechanical stress effect and biochemical effect, the radiation pneumatic ballistic shock wave can effectively release the adhesions at the tendon stop, accelerate the local microcirculation, improve the local tissue blood circulation, and reduce the sterile inflammatory reaction; and over-stimulate the local nociceptive nerve receptors, so that the subsequent centripetal impulses cannot be transmitted to achieve the purpose of pain relief.