Bruising of the arm after playing volleyball requires prompt braking and rest, and if necessary, further radiographs to rule out the possibility of fracture. If a fracture is ruled out, soft tissue contusions are the main concern, which usually require immediate cold compresses in the early stages. Yunnan Baiyao aerosol can be used to stop the bleeding and reduce swelling by constricting the broken capillaries. After cold compresses, hot compresses are usually applied after 24-48 hours due to the presence of local fluid and blood accumulation in soft tissue injuries. Can also be used to promote blood circulation and blood stasis drugs, promote tissue oozing blood, exudate absorption, thereby alleviating local bruising symptoms. Simple soft tissue injury through the above early cold compress, late hot compress or dredge the meridian blood treatment, generally about 1 week can achieve the purpose of healing.