Unexplained hepatitis is a condition in which the exact cause of hepatitis cannot be found. Hepatitis is a liver disease caused by inflammatory lesions in the liver; the causes of hepatitis are very diverse and complex, but not every hepatitis patient can find a clear cause, so when the cause of hepatitis cannot be found, it is called unexplained hepatitis. For patients with hepatitis, identifying the cause of the disease itself is an important foundation for dealing with the disease, but because the cause of unexplained hepatitis cannot be identified, the difficulty factor for its treatment rises significantly. Individuals who are found to have unexplained hepatitis through examination should actively cooperate with doctors for further examination, and in the case of more serious conditions, it is also necessary to consider liver transplantation as a means of treatment. Individuals should do a good job of daily care and health care for the liver, and seek medical treatment in a timely manner if they are found to have abnormal symptoms such as jaundice, nausea and vomiting, and low appetite.