Medial epicondylitis of the humerus is also known as golfer’s elbow. The medial epicondyle of the humerus is the attachment point of the tendons of the flexor carpi radialis brevis and pronator teres muscle of the forearm. When flexing the elbow and wrist and rotating the forearm, the ulnar flexor muscle is in a state of tension and contraction, which is easy to cause acute sprains or chronic strain injuries to the attachment point of its tendon. When making throwing movements or falling down with the palm of the hand on the ground, the elbow joint is straightened and the forearm is turned out excessively, which can make the attachment point of the forearm flexor muscle and rotator anterior round tendon partially torn. Humerus medial epicondylitis treatment methods are as follows: reduce the causes of medial epicondylitis, such as throwing, can be local plasters, hot compresses, physiotherapy, if the treatment is ineffective, you can pain point closure therapy, find the pain point of the skin routine disinfection, with the use of tretinoin and lidocaine hydrochloride mixture of preparations for the pain point closure injections to the pain disappears as long as the pain once a week for a course of treatment for 3 times.