Fatty liver infiltration is also known as infiltration of liver cells with fat cells, which appears as fatty liver. Patients with fatty liver can have no clinical symptoms, but even without symptoms need to be treated, not necessarily with liver-protecting drugs, need to control the diet, increase exercise and exercise, and remove bad behaviors are more effective treatment measures. Fatty liver is reversible, and early recovery can be achieved by controlling the diet and eliminating the cause of the disease. If fatty liver is left untreated, it can progress to cirrhosis, liver failure and liver cancer, which can be life-threatening. Fatty liver is due to abnormal lipid metabolism, and can be combined with systemic diseases, such as hypertension, diabetes mellitus, nephropathy, etc. If not controlled, more serious complications can occur. Therefore, for people who are at high risk of developing fatty liver, prevention of fatty liver is better than treatment, and health education and behavioral interventions should be provided to patients to reduce the risk of developing fatty liver.