Minimally invasive rotator cuff injury surgery is less invasive and relatively less risky than traditional surgery. Possible risks after rotator cuff injury surgery include re-tear of rotator cuff, joint adhesion, infection, neurovascular injury and so on. 1. Re-tear of rotator cuff: If the rotator cuff is over-exercised after the surgery, or if the proper exercise is not carried out according to the doctor’s instruction, or if the training posture is not proper, it can cause re-injury of the rotator cuff, which is also related to the previous rotator cuff injury. 2. Joint adhesion: after rotator cuff injury, one should actively carry out functional exercise under doctor’s instruction. If one fails to carry out joint rehabilitation training because of pain and other factors, joint adhesion will be caused due to blood seepage and inflammation exuding from the tissues around the joints, resulting in limitation of joint activities. 3. Infection: Infection of the wound can be caused by bacterial invasion of the incision after surgery. 4. Neurovascular injury: due to improper surgery, accidental injury or hematoma compression during surgery, it can cause injury to the nerve and blood vessels around the shoulder joint, causing clinical symptoms such as pain, numbness and swelling of the upper limb. The risk of minimally invasive rotator cuff injury surgery is closely related to intraoperative operation, postoperative care, rehabilitation and exercise, etc. It is recommended that patients actively cooperate with the doctor after the operation and follow the doctor’s instructions to avoid complications.