Limb swelling grading, according to the severity is generally divided into 4 levels, respectively, 0 degree, 1 degree, 2 degrees, 3 degrees, it is necessary to understand the degree of swelling of each 1 grade, first is 0 degree, the limb does not have any swelling phenomenon, and there is no difference with the normal organism, belongs to the normal, no lesion of the skin; second is 1 degree, the skin on the surface of the limb appears swollen, but the skin skin lines still exist, and This situation is not too worrying and can be improved by medication; then there is degree 2, where the skin is swollen and the skin temperature of the swollen area has disappeared, but there is no pain, so it is necessary to draw the attention of the patient and go to the hospital for professional examination and treatment to prevent the deterioration of the condition; then there is degree 3, where the skin lines of the swollen area of the limb have disappeared and the skin surface has Then, in degree 3, the skin lines of the swollen limb have disappeared, and the skin surface has a very obvious scar, and the skin surface has become painful, and the pain continues to worsen, at this time, the patient should go to the hospital for treatment in a timely manner, and should not scratch the scar on the skin surface to prevent infection.