Diabetic patients wound than the average person difficult to heal, there are a variety of reasons: 1, diabetic patients with low immunity, prone to small and large vascular changes, the most common vascular changes are hardening of the arteries, thinning, poor blood circulation, so that the nutrients needed for wound healing, such as oxygen, vitamins, protein is difficult to reach the wound, or the amount of arrival is less, resulting in new cell growth of diabetic wounds is impaired, so the healing is slow. Therefore, the healing is slow; 2, diabetic patients with high blood sugar, blood flow throughout the body will also flow to the wound, in the wound cells blood circulation is in a high sugar state, easy to breed bacteria, resulting in increased bacterial reproduction, the wound is not easy to heal; 3, nutrients, such as vitamin B deficiency, can also lead to slow wound healing; 4, diabetic neuropathy, wound location of nerve nutrition and nerve regeneration ability are very poor, affecting wound healing.