Liver cancer often starts insidiously and lacks typical symptoms in the early stage, so it is difficult to be detected, and therefore there are no so-called 18 premonitory signs of liver cancer. If you suspect liver cancer, you can go to the hospital for fetoprotein screening in time to initially check whether there is liver cancer. In addition, when patients show obvious clinical manifestations such as liver pain and radiating pain, it often indicates that the disease has entered into middle and late stage, and the common clinical symptoms are mainly as follows: 1. Liver pain: under the influence of tumor growth and stretching of liver envelope, patients may experience persistent distending pain or dull pain in right upper abdomen, and pressure pain may also appear under pressure, which is one of the most common symptoms of liver cancer; 2. Radiating pain: if the lesion invades diaphragm, the pain Ascites: cancer can cause the liver to be in a decompensated state, resulting in a decrease of plasma osmotic pressure, causing a rapid increase of peritoneal fluid, i.e. the formation of ascites, which is mostly leaking fluid. If liver cancer invades liver peritoneum or peritoneal lining and causes the outer protective membrane to break down, bloody peritoneal fluid may appear; 6. Other symptoms: When liver cancer metastasizes to lung, bone, brain, chest and other parts, it may produce corresponding symptoms, and progressive wasting, fever, lack of appetite, weakness, malnutrition, etc. will appear in late stage. Patients with concurrent hepatitis and cirrhosis often have skin manifestations such as liver palm and spider nevus. Since liver cancer is not easily detectable in early stage, it is recommended to pay attention to regular checkups, especially for hepatitis patients, alcoholics and those with family history of liver cancer. Usually, you should pay attention to the protection of liver, avoid drinking alcohol, avoid abusing drugs, do not eat moldy food, eat low-fat and low-salt diet, combine work and rest, and avoid staying up late.