There are many causes of dark circles under the eyes of boys. First, hereditary constitution, and the construction of the physiology. When the skin around the eyes is particularly thin, and the subcutaneous tissue is particularly small, when the blood flow passes through the large veins here, especially close to the skin under the surface layer, there will be a blue-black halo, which is also known as the dark circles under the eyes. Second, the child’s lack of sleep, fatigue, so that the eyelids do not rest, in a state of tension and contraction, the part of the blood flow for a long time to increase, caused by the blood vessels under the skin of the eye circle is full, thus leading to the circle of the eyes of the bruises, stagnation under the dark shadow. Third, the child innate insufficiency, kidney loss, so that the two eyes lack of essence of the moisturizing, so that the black floats on it, so dark circles under the eyes. Fourth, long illness and weakness, or the first healing of the boy, because the subcutaneous tissue around the eyes is relatively weak, the skin is prone to hyperpigmentation, the disease is very easy to reveal in the upper and lower eyelids above the dark circles under the eyes. Fifth, born with dark circles under the eyes. Certain boys after birth, there will be obvious dark circles under the eyes, difficult to fade. Sixth, boys have more obvious pigmentation, can also cause dark circles under the eyes.