The onset of hepatitis is often insidious, attention to the following aspects, may be able to early detection of hepatitis. 1, within half a month to 6 months had close contact with hepatitis patients, ate half-cooked seafood, or transfused blood or blood products, or had unclean sexual contact, used syringes that are not strictly sterilized, received unclean acupuncture, tattoos, tooth extraction and surgery, that is, the possibility of being infected with hepatitis. 2, recently the general fatigue and weakness, do not want to eat, nausea, vomiting, aversion to grease, abdominal distension, pain in the liver area, irregular stools, urine like thick tea, etc., after rest the above symptoms still continue not to improve, and can not find other reasons, should be considered the possibility of hepatitis. 3. Those who have the first exposure history and the second self-perceived symptoms and signs should do the necessary laboratory tests quickly. Blood liver function, hepatitis virus antigen and antibody tests to determine whether hepatitis is present and what kind of hepatitis is present.