Red dots on the arms of liver cancer patients are usually spider nevi, which usually do not appear on the arms in the early stage. Spider nevi are formed due to the expansion of the end branches of small arteries in the skin, and most of them appear in the late stage of impaired liver function or liver cancer. 1. Most liver cancers are closely related to alcoholic hepatitis and chronic hepatitis B. As the disease progresses, it can develop into cirrhosis and even liver cancer. Early liver cancer patients mostly show symptoms such as epigastric pain, loss of appetite, abdominal distension, nausea, etc. As the disease progresses, jaundice, ascites, spider nevus, liver palm, etc. may appear. 2. For early stage liver cancer patients, as the cancer tumor is relatively small, liver function is usually not impaired and spider nevus usually does not appear; as the condition progresses, the cancer tumor gradually increases or even metastasizes and spreads, resulting in serious impairment of liver function, which may lead to spider nevus at this time. For patients with chronic hepatitis B, alcoholic hepatitis, etc., it is recommended to go to regular hospitals for consultation and examination of unexplained “small red dots”, and follow the doctor’s instructions to cooperate with the treatment after comprehensive evaluation of the condition.