Diabetic rotten foot is a diabetic patient with necrosis and ulceration of the toes. Simply divided into three levels, that is, mild, moderate and severe, and how to divide the three levels? If we compare diabetic foot to a house, the outer wall of the house is broken, which is a light grade, that is, the skin has ulcers. Intermediate level is to the main body of the wall of the house, the main body of the wall rotten, it is equivalent to the foot to the fascial tissue, has reached the tissue of the tendon, you can see the tendon rotten. Heavy level is the main beam of the house rotten, the main beam rotten is equivalent to the bones of the human body rotten, the bones are the pillars of the human body. In the case of the light level, the professional point can be divided into one, two, three, light level of one, two, three is equivalent to the external walls of the house, equivalent to tiles to the tiles below, and almost to the entire external wall of the wall. In the light grade one level is equivalent to the tiles falling off, which is a mild ulcer. In the case of grade two, the cement pavement under the tiles is broken, which is equivalent to a slightly deeper side of the ulcer, to the fascia, superficial fascial conditions. Grade 3 is almost to the tendon, deep fascia.