After a muscle collision, both cold compress treatment and hot compress physical therapy are needed, but the specific time period for cold compress and hot compress is different. For muscle bruises, 24-48 hours after the injury, this time in the acute phase of the injury, should be given a local cold compress treatment. The first is to make sure that the person has a good understanding of the situation, and the second is to make sure that the person has a good understanding of the situation, and the second is to make sure that the person has a good understanding of the situation, and the third is to make sure that the person has a good understanding of the situation, and the third is to make sure that the person has a good understanding of the situation, and the third is to make sure that the person has a good understanding of the situation. And after the acute period, that is, 24-48 hours after the injury, changed to local heat physiotherapy. At this time, the role of hot compresses is mainly to expand the local blood vessels, to improve local blood circulation, which can promote the healing of muscle bruises at the tissue.