The causes of enlarged liver are more, clear causes and then treatment, determine whether there is liver inflammation, fatty liver, liver tumors and other problems. 1. Hepatitis: Under normal circumstances, the liver cannot be touched on the surface of the body during the physical examination of the liver, some people may touch the lower edge of the liver, but generally not more than two centimeters, the liver is touched during the physical examination or more than three centimeters below the xiphoid process, suggesting that the liver is enlarged. When hepatitis occurs, the liver will become enlarged. At this time, it is necessary to determine the main cause of hepatitis based on the ultrasound results, the number of viral replications, liver function, etc., and determine whether it is necessary to start the antiviral treatment program. 2. Fatty liver: Fatty liver can also lead to enlargement of liver, it is recommended to pay attention to light diet, adhere to appropriate exercise and reduce weight for treatment. 3. Liver tumor: when liver tumor occurs, it will also lead to enlargement of liver, especially to evaluate whether there is malignant tumor. For malignant tumor of liver, it should be detected early through liver ultrasound, liver CT, alpha-fetoprotein and other examinations, and then go to doctor’s evaluation and give the formulation of treatment plan, which usually requires medication, radiotherapy, surgery and other treatments. When liver enlargement is detected by physical examination, we should consult a doctor in time and conduct relevant examinations under the guidance of a professional doctor to find out the cause of the disease and provide targeted treatment.