Mild fatty liver does not affect life expectancy, but severe fatty liver may even be life-threatening at any time if complications arise. Fatty liver is a relatively common disease, mainly due to long-term consumption of high-fat and high-cholesterol foods, impaired liver function, and the presence of excessive fatty substances in the liver. In some people, fatty liver is mild, and as long as the diet is adjusted in time and proper exercise is performed, the fatty liver condition can be cured and will not affect the life expectancy, which is the same as that of normal people. In some people, the symptoms of fatty liver are more severe and can even cause complications. Once the liver function is severely impaired, especially in cases of ascites and gastrointestinal bleeding, the patient’s life is threatened. In the case of massive gastrointestinal bleeding, treatment becomes more difficult and may threaten the patient’s life at any time.