Wounds on the front of the calf are slow to heal compared to other areas. The main reasons are vascular structure characteristics, soft tissue conditions and so on. 1. Vascular structure characteristics: the lower third of the lower leg has poor blood supply, especially in diabetes, hypertension and other special people, often accompanied by small vessel sclerosis, etc.; in terms of veins, the lower calf veins are shallow, lack of sufficient muscle support tissue, so that the contraction of the “pump effect” is not very effective, resulting in easy venous return. In terms of veins, the lower calf veins are shallow and lack sufficient muscular supportive tissues, which makes the “pumping effect” of contraction ineffective and leads to easy venous return. 2. Soft tissue situation: the skin in front of the calf, especially in front of the outer side, is thicker and tighter, with less mobility, and it is a part of skin and bone, with less fat and poorer blood circulation, so the wound in front of the calf heals more slowly. Therefore, when the calf is injured, due to the slow healing, we should pay attention to the prevention of infection and other conditions in our daily life; if there is any discomfort, please consult a doctor in time.