After the patient’s trauma, the wound bleeds and forms a blood scab, if the wound has not yet healed, try not to forcefully remove the blood scab at this time. Because if you force to remove the scab, it may cause wound infection, which is not favorable to the healing of the wound. In addition, forcibly removing the scab may also form a scar, so try not to use external force to remove the scab after the formation of the scab, and wait for the scab to fall off naturally. If the wound has healed after the trauma, the blood scabs still do not fall off, then you can use iodine or sesame oil to soak the blood scabs, and then remove the blood scabs after they have softened, and try not to remove the blood scabs at an early stage. The blood scab is the blood platelets in the blood and fibrin coagulation, after the formation of the wound can play a certain protective role, to avoid the invasion of external bacteria caused by infection, and can promote the growth of granulation tissue to promote wound healing, to be completely healed after the blood scab will naturally fall off, so there is no need to remove the blood scab too early.