The dark face of the elderly is mostly a sign of ischemia and hypoxia in the head and face, seen in some patients who have been smoking for a long time, and need to go to the hospital to monitor finger pulse oxygen, do electrocardiogram, cardiac ultrasound to exclude chronic hypoxia, and heart diseases. Darkening of the face in the elderly is also common in some patients with chronic liver injury, serious liver disease, kidney disease, such as hepatitis, cirrhosis, liver cancer, renal insufficiency. There are also some elderly people with dark face, also common in poor sleep at night, irregular work and rest, long-term neurasthenia will also appear dark face, then you need to adjust the work and rest time of life, balanced diet and nutrition, to ensure sufficient sleep and good mood.