The common causes of a tendon jumping around in the elbow joint include subluxation of the ulnar nerve, adhesion of the local tissues in the elbow joint, tenosynovitis, etc. It is necessary to go to the hospital in time for medical consultation, and targeted treatment according to the different causes leading to the above symptoms. 1. Semi-dislocation of ulnar nerve: Mostly due to motor habit or developmental abnormality, the ulnar nerve is dislocated to the nerve groove when the elbow joint is active, resulting in a tendon sliding when the elbow joint is flexed or extended. If it does not cause more obvious clinical symptoms, no special treatment is needed. If it leads to numbness and sensory loss in the hand, anterior transposition of the ulnar nerve is often needed. 2. Elbow joint local tissue adhesion: mostly seen in the elbow joint after trauma, local edema, inflammation, in the recovery period did not carry out appropriate functional exercise, resulting in local injury tissue adhesion, feeling and symptoms of the elbow joint has a tendon jumping around, the main local hot compresses, baked electricity physiotherapy, but also can be combined with massage, tuina treatment. 3. Tenosynovitis: long-term chronic strain on the elbow joint, cold caused by the elbow tendon edema, inflammation, resulting in elbow tenosynovitis, will also appear in the elbow joint tendon jumping around clinical symptoms. The main thing is to reduce the elbow activities, and local hot compresses, baking physiotherapy, conservative treatment is ineffective, you can choose surgical treatment, such as tenosynovial incision and release surgery. For patients who often feel that the elbow joint has a tendon jumping around need to go to the hospital as soon as possible, do not delay treatment.