There are several reasons for a dark face: the first point, congenital factors. The second point, sunlight exposure, resulting in increased melanin, and the appearance of a dark face. The third point, poor blood supply to the heart, the appearance of related heart and cerebrovascular diseases, and the appearance of a dark face and lack of qi and blood. The fourth point, kidney disease, will appear face can be black, no luster, while there is obvious weakness, foam in the urine and related symptoms, need to be examined in the hospital as well as treatment. Fifth, prolonged alcohol consumption and smoking can lead to deviations in the nutritional status of the skin of the face, or partial deficiencies of trace elements and vitamins. The sixth point is that the dark face has a lot to do with liver damage, especially in the later stages of liver disease, such as cirrhosis and liver cancer, the dark face will be more obvious, and there will be a larger stomach, and thin arms and legs.