With the improvement of living standards, the incidence of fatty liver has increased sharply, posing a serious risk to liver health. Because the liver is a “silent organ”, there are usually no obvious signs and symptoms until the disease is very serious. Fatty liver is very harmful to the liver, but there are usually no obvious symptoms in the early stages, so many people just feel a little less energy, a little less appetite, and it is easy to take it lightly and not pay attention to it. Therefore, fatty liver is a real “hidden liver health killer”. Fatty liver is a lesion caused by excessive accumulation of fat (more than 5% of the liver weight) in the liver cells due to various reasons. Fatty liver is the second most common liver disease in China after viral hepatitis, and is a serious threat to the health of the nation, recognized as a common cause of hidden cirrhosis. The prevalence of fatty liver is as high as 25% among government officials, senior intellectuals, entrepreneurs, individual owners, cab drivers, etc. The prevalence of fatty liver is as high as 50% among obese people and type 2 diabetics; the prevalence of fatty liver is as high as 58% among alcoholics and alcoholics; the prevalence of fatty liver is about 60% among subhealthy people who often suffer from insomnia, fatigue, lack of food and drink, and gastrointestinal dysfunction. up to 60%. Especially in recent years, the age of onset of fatty liver has been decreasing, with an average age of 40 years old, and more and more fatty liver patients around 30 years old, and more men than women under 45 years old. Ten major hazards of fatty liver: i. induce and aggravate coronary heart disease and hypertension; ii. direct damage to the liver; iii. promote the formation of coronary atherosclerosis; iv. can lead to cirrhosis, liver failure, liver cancer; v. encephalopathy fatty liver syndrome (Reye syndrome); vi. acute pregnancy fatty liver with high mortality rate; vii. hepatitis B combined with fatty liver patients to accelerate the development of cirrhosis; viii. Induce or aggravate diabetes; ix. damage to the body’s digestive system; x. reduce the body’s immune function, detoxification function.