Yellowish skin in the elderly may be bile duct cancer, in addition to liver disease. Doctors suggest that elderly people, especially those with yellow skin and those with congenital diseases of liver and gallbladder (such as congenital bile duct cyst, congenital hepatopancreatic and renal cyst, bile duct stones, sclerosing cholangitis, etc.), must go to hospitals for relevant examinations regularly to fully investigate whether they are suffering from bile duct cancer. It is clinically found that the incidence of bile duct cancer is mostly among the elderly aged 50-70, and men are higher than women. The main symptom of bile duct cancer is painless jaundice, which is misdiagnosed as general hepatitis, cirrhosis or infectious disease by inexperienced doctors. In fact, jaundice is the earliest and most important symptom of cholangiocarcinoma, and most of the cholangiocarcinoma patients have different degrees of yellowing skin. Only a small percentage of cholangiocarcinoma patients will experience abdominal pain and distension, weight loss, itchy skin, loss of appetite, etc. These symptoms are the early warning signs of cholangiocarcinoma. And once bile duct cancer reaches advanced stage, it will show nausea, vomiting, urine color like soy sauce or thick tea, or even black stool. Once you find yourself with early symptoms of bile duct cancer, you should immediately go to hospital for relevant examination and screening. In addition, to prevent bile duct cancer, firstly, eat more food rich in protein that can be easily digested and absorbed, such as fresh fruits and vegetables, lean meat, aquatic products and soybean products, etc., and eat less spicy, fatty and fried food, less high-fat food and drink more water. The second is to maintain a comfortable lying position when resting, generally the left side lying position, supine position is better, to prevent pressure on the gallbladder area. Third, appropriate participation in physical exercise, such as qigong practice, walking, listening to music, so that the combination of movement and static. Do not sit and lie down for a long time. Fourth, maintain emotional stability, optimism and open-mindedness, avoid anger, anxiety, depression and other adverse emotions.