The general recovery time for a broken skin knee is based on the patient’s own ability to repair, whether the wound is co-infected, and whether to take active treatment measures to analyze the factors. If the degree of broken skin is relatively light, not causing serious local soft tissue infection, their own healing ability is strong, at this time actively using vital iodine local thorough disinfection, sterile gauze bandage, oral bruising pill, generally 5-7 days after the local broken skin can crust healing, will not cause serious complications. Second, if the wound is extensive, and accompanied by local soft tissue infection, the formation of redness, swelling, pain, their own healing ability is poor, and did not give timely wound debridement disinfection treatment, will cause delayed healing of the local tissue, most patients often need 2 weeks of time trauma to fully recover.