Patients with rotator cuff tendon injury can be treated surgically and conservatively as follows: First, surgical treatment: Most patients who have rotator cuff tendon injury should be treated surgically. Through minimally invasive arthroscopic surgery, the tendon can be directly sutured and the stop of the tendon can be reconstructed, and the patient’s shoulder joint function will be restored and the shoulder joint pain symptoms will disappear completely. Second, conservative treatment: Rotator cuff injury but no obvious effect on shoulder joint function, or some patients due to the existence of serious medical diseases and no obvious requirements for shoulder joint activities, can be treated conservatively, using external fixation brace to restore local symptoms and reduce pain in the short term, which can make the shoulder clinical manifestations gradually relieve, and also be able to cope with daily life, but the shoulder muscles will show obvious weakness. At this time, the patient should strengthen the shoulder muscle strength training to try to make the atrophied shoulder muscles recover to some extent.