There may be two cases of bruises on the feet, bruises on the feet but not with the calf, or changes in the color of the skin of the foot, edema of the calf, this is mostly a normal physiological phenomenon, because the lower limbs and feet are far from the heart, so in the upright will bear greater venous pressure, about twice the normal upper limb venous pressure or more, when there will be venous congestion of the distal limbs, so there will be bruises on the feet, this This situation is a physiological phenomenon, do not care. If it is accompanied by edema or skin color change in the foot and lower leg, this is a pathological phenomenon, which means that there is already valve regurgitation, resulting in the accumulation of some blood in the distal veins of the limb in the process of returning to the heart, resulting in skin nutrient disorders, and this condition needs further examination and treatment.