The clinical picture of primary hepatocellular carcinoma is very atypical, and its symptoms are usually not obvious, especially in the early stage of the disease process, and are mostly found by chance during physical examination of blood AFP and liver ultrasound. Usually, about 70% of small hepatocellular carcinomas below 125px are asymptomatic, and about 70% of asymptomatic subclinical hepatocellular carcinomas are also small hepatocellular carcinomas. Once symptoms appear, it means that the tumor is already large, and most of those who visit the doctor have already entered the middle and late stages of the disease. Therefore, in order to detect liver cancer at an early stage, besides regular checkups, we should also pay attention to the following changes in general. Most patients with liver cancer have pain in the liver area as the first symptom, especially those with history of hepatitis and cirrhosis, the incidence of this symptom is more than 50%, usually located in the right rib area or under the saber process, mostly intermittent or continuous hidden pain. Dull pain or stabbing pain. Early patients may feel discomfort in the right upper abdomen, and the pain may be mild and heavy or relieve itself for a short time. Gastrointestinal symptoms in early stage of liver cancer often include loss of appetite, epigastric fullness after meals, or even nausea, vomiting or diarrhea, especially diarrhea, which is easily ignored because it is mistaken for enteritis. Due to the influence of the disease, patients with impaired liver function will lose weight in a short period of time. Once the physical condition of a person decreases, patients will show symptoms of weakness and often feel tired, which are also some of the symptoms that will appear in the early stage of the disease. 4. Fever Most of the patients will have different degrees of fever in the early stage of the disease. A small percentage of patients have high fever and most of them have low to moderate fever. The fever of liver cancer is mostly cancer fever, which is caused by the release of pyrogen into the blood circulation after the necrosis of tumor tissue. 5.Loss of weight Due to impaired liver function and reduced digestion and absorption function, unexplained loss of weight is also a common symptom of liver cancer patients. It often occurs in the middle and late stages of liver cancer. It may be caused by the biochemical metabolic changes of the body caused by tumor metabolites, coupled with the reduction of food intake. Early symptoms of liver cancer are not obvious, so close observation is recommended, and vigilance should be raised when the above or similar conditions appear. Early detection of early symptoms of liver cancer and symptomatic treatment are the key and prerequisite to improve the efficacy of liver cancer.