Darkness around the corners of the mouth may be caused by a variety of reasons, to exclude the possibility of organic diseases, such as blood system diseases, respiratory system diseases, circulatory system diseases, treatment for the cause of the disease, darkness around the corners of the mouth can be eliminated. For non-organic diseases, physiological state caused by the corners of the mouth around the darker, can be given health products, cosmetics and other symptomatic treatment. In addition, you can usually pay more attention to oxygen inhalation, etc., to improve the oxygenation index, so that the phenomenon of darkness around the corners of the mouth can be improved, and it is recommended that regular medical checkups in the hospital, to clarify whether there is a state of sub-health and targeted treatment.