For patients with fatty liver, an ultrasound examination requires an empty stomach because the ultrasound doctor will incidentally check the gallbladder and biliary tract to understand the size and structure of the gallbladder, the presence of gallbladder polyps, gallbladder stones, and the width of the portal vein. In the patient’s review of the ultrasound, it is recommended that an empty stomach is required. It is also necessary to check liver function in patients with fatty liver, which also requires an empty stomach. If meals affect transaminases, there is a risk of elevated transaminases. Meals can also cause the gallbladder to contract and there is no way to view the gallbladder. For patients with fatty liver, if there is liver function damage, it is recommended to cooperate with the specialist to give the use of liver protection and enzyme-lowering drugs. For fatty liver in ordinary life need to remove the cause of the disease, such as alcohol cessation, weight loss, etc..