What are all the reasons why wounds do not heal in diabetic patients? First, the wrong way of thinking. Diabetic wounds are very different from ordinary wounds, and can no longer be treated like ordinary wounds. For example, normally we would think that the process of wound crusting is the process of healing, in essence, put on the diabetic patients, wound crusting may not be a good thing, the chances of infection under the scab is very high, resulting in diabetic foot is not fundamentally treated. Diabetic wounds, never use a variety of powder or ointment premature crusting. Second, the focus is not right. Patients appear to be localized skin infections, but for diabetic patients there are many factors that can affect wound healing, such as peripheral vascular and neuropathy of the lower limbs, poor blood sugar control, blood pressure and lipid abnormalities. Therefore, the wound treatment for diabetic patients is a comprehensive treatment in many aspects, control of infection is one side, but also all the problems that affect the wound healing must be treated in order to heal. Third, inflammatory tissue hinders wound healing. Because there is no timely debridement of the patient’s wound, the infected tissue will prevent the growth of normal granulation tissue, and no healthy tissue will grow out. Nowadays, many hospitals treat diabetic wound infections, most of them are superficially anti-inflammatory and sterilizing, but rarely clean the necrotic inflammatory tissues. You should know that necrotic tissue contains a large number of germs, which is one of the main reasons why the infection is difficult to control, the speed of elimination of germs can not catch up with the speed of multiplication, the infection is difficult to control. Moreover, the necrotic tissue covering the surface of the new tissue will also hinder the growth and reproduction.