The most common factors affecting the healing of trauma include the following: 1. local tissue damage and blood supply, if the local damage or tissue defect is serious and the blood supply is affected, the healing time will be long. 2. patient’s basic condition, if the patient is combined with diabetes mellitus or hypoproteinemia and other low nutritional status, it will definitely lead to the delay of local healing of trauma and even secondary bacterial infection. 3. local tissue If the local tissues are seriously contaminated or even combined with serious bacterial infection, the recovery of trauma is inevitably delayed and even requires second-stage surgical suturing to obtain healing.