Patients with hepatic encephalopathy who develop mental disorders can be cured. The cause of hepatic encephalopathy is more commonly believed to be liver damage, such as alcohol, viral or drug liver damage leading to liver failure. Most metabolites are broken down and inactivated by the liver and excreted through the urine, making the liver an important organ for eliminating toxins in the body. When liver function is affected, it is common that blood ammonia in the blood rises sharply, and after the liver is unable to eliminate blood ammonia, it can quickly pass through the blood-brain barrier, which can have a serious impact on brain functions, such as computation, memory, etc., and even cause coma, delirium, limb convulsions, and deep coma, that is, a complete loss of consciousness. As for patients with hepatic encephalopathy, central nervous system symptoms can be restored after adjusting blood ammonia and other metabolites to the appropriate level by regulating liver function.