A strained shoulder tendon is caused by an external force on the shoulder joint, resulting in damage to the muscles, soft tissues, and tendons in the shoulder area. When the symptoms of strain appear, the patient should avoid strenuous activities of the shoulder and avoid lifting heavy objects on the upper limbs. If the degree of muscle, soft tissue and ligament damage is serious, external fixation with braces or casts is required. If the symptoms of shoulder tendon strain are not relieved within a short period of time after standard treatment, or if the condition is progressively aggravated and symptoms such as limitation of shoulder joint movement and weakness in holding objects appear, you should go to a regular hospital in a timely manner to improve the MRI examination of the shoulder joint to clarify the severity of the injury, and then choose the appropriate treatment to get timely and effective relief of shoulder tendon strain symptoms. This will help to relieve the shoulder strain.