Muscle and soft tissue contusion. In this case, it is necessary to rest, reduce shoulder movements, take more rest and take some over-the-counter painkillers, which will help relieve pain and help to recover. Generally, you will get better after a few days' rest. At this time, do proper shoulder exercises, avoid weight-bearing exercises, and only do slight activities to accelerate the blood circulation of shoulder muscles and speed up recovery, so as not to burden the shoulders.