Hepatitis is mainly characterized by symptoms such as change in appetite, fever, change in urine, poorer body condition, pain in the liver area and yellowing of the sclera. There are many factors that can lead to hepatitis, such as viral infections, bacterial infections, drug toxicity, alcoholic injuries, autoimmune disorders, and fatty liver. The most common symptoms in patients with hepatitis are loss of appetite, bloating, aversion to greasy food, nausea, vomiting, and fatigue. The main reason for this is that hepatitis affects the secretion of bile, which contains bile salts that play an important role in the absorption and digestion of fats, and therefore patients may exhibit specific digestive symptoms. Hepatitis-induced destruction of liver cells can affect the metabolism of bilirubin, which increases the amount of bilirubin entering the bloodstream, inducing the development of deepening of urine color and yellowing of the sclera. Different types of hepatitis need to be diagnosed in combination with the patient’s clinical manifestations, laboratory tests and ultrasound.