Cold physiotherapy refers to the use of ice packs or wet towels on the injured part of the cold treatment. Can make the injured capillary constriction, reduce congestion, so that the nerve endings are less sensitive, for reducing pain, cooling and cooling is a more effective method, is to reduce pain, cooling to heat more effective method, but also to reduce the patient’s local blood flow to prevent the spread of inflammation. Cold compresses are more suitable for patients with soft tissue injuries in the early stage, and can play a role in reducing swelling, pain, subcutaneous bleeding, fever patients can reduce fever, toothache with cold compress method can play a role in reducing the symptoms of toothache. Cold physiotherapy is also suitable for orthopedic or sudden bruises. For example, sprains, cold compresses in the case of non-bleeding, the effect will be very good, if there are symptoms of bleeding recommended to go to the hospital for treatment in a timely manner.