The type of hepatitis virus infection: If the hepatitis A or E suffered from, usually will not turn into chronic; while if the hepatitis B, C, D or G; due to the influence of a variety of reasons, the body still can not clear the virus after 6 months, the clinical easy to turn into chronic hepatitis. The immune status of the infected person: if the body’s immune response is normal, it can clear the invading virus and make the body recover smoothly. If the body’s immune response is low, the level of interferon is low, and the formation of the organism that neutralizes the virus is insufficient, the inability to completely clear the virus, the liver cells suffer lasting damage, then the development of chronic hepatitis, and after 5-10 years a part of patients develop cirrhosis, and even the original occurrence of liver cancer.”