The so-called hepatitis B nevus is usually called a spider nevus in clinical practice and is mainly found on the forehead and back. They are mainly seen on the forehead and back. The main pattern is a small red dot with a pinpoint shape in the middle, surrounded by capillaries, like the claws of a spider. Most patients with this condition have liver palms, which are redness of the skin and muscles on the palm side of the hand. This is the first time you should consider whether or not you have viral hepatitis, you should take a blood test for hepatitis B and hepatitis C related tests, such as hepatitis B three system and hepatitis C antibodies, if both are negative, the patient also needs to observe the liver function for elevated bilirubin. If the bilirubin is persistently elevated, a disease cannot be ruled out, which is autoimmune hepatitis, and such patients need to have blood tests related to autoimmune hepatitis to see if the anti-nuclear and antibody is high, and if it is, the patient needs to have a liver puncture biopsy.