Tennis elbow, as it is commonly known, is a painful inflammation of the tendons on the outside of the elbow. The pain is caused by repetitive force on the muscles responsible for the dorsal extension of the wrist and fingers. The patient may experience pain on the outside of the elbow when gripping or lifting objects with force. Tennis elbow is a classic example of overuse syndrome. Studies have shown that the wrist extensors, especially the radial carpal short extensors, are under very high tension when performing wrist extension and exertion to the radial side, and tend to overstretch some of the fibers at the musculofascial junction, creating a slight tear. Lateral humeral epicondylitis, also known as lateral elbow pain syndrome, is commonly known as tennis elbow. The main clinical manifestation is pain on the lateral side of the elbow joint, which can be aggravated when clenching a fist and rotating the forearm to extend the elbow (such as twisting a towel, sweeping the floor, etc.), and localized pressure pain without abnormal appearance. Epicondylitis of the humerus belongs to the category of tendon injury and elbow pain in Chinese medicine. It is thought to be caused by trauma or strain on the elbow, or by external wind, cold and dampness, resulting in local Qi and blood stagnation and stagnation of the ligaments.