To determine whether the shoulder tendon is ruptured or injured, it is necessary to consult the doctor in time, and the doctor will judge and diagnose the disease according to clinical symptoms, physical examination, imaging examination and other ways. 1. Clinical symptoms: Doctors can initially judge whether there is injury based on the patient’s complaints and clinical symptoms. Early tissue exudation is more obvious in shoulder tendon injuries, which will cause swelling, pain and local skin reddening, etc., while tendon rupture will have obvious swelling and pain. 2. Physical examination: through physical examination, we can understand the situation of tendon injury in shoulder joint. Mild tendon injury usually does not cause limitation of shoulder joint activities, but it will cause painful decrease of muscle strength of shoulder joint; tendon rupture will cause limitation of shoulder activities, weakness of limbs and even muscle atrophy and dysfunction. 3. Imaging examination: through X-ray, CT, MRI and other imaging examinations, it is clear whether there is any fracture, rotator cuff injury, tendon injury or even rupture in the shoulder joint, so as to make a clear diagnosis in time. If rupture or injury of shoulder tendon is considered, it is recommended that the patient should go to the hospital in time to improve the examination and carry out standardized treatment under the guidance of the doctor.