Hepatocellular carcinoma, i.e. malignant tumor of liver, can be divided into two categories: primary and secondary. Primary liver malignant tumors originate from epithelial or mesenchymal tissues of the liver, and the former is called primary liver cancer, which is a highly prevalent and harmful malignant tumor in China; the latter is called sarcoma, which is less common compared with primary liver cancer. Secondary or metastatic liver cancer refers to the invasion of malignant tumors from multiple organs of the body into the liver. Dietary principles of liver cancer: 1. Balanced diet: patients are also required to eat more fresh vegetables and fiber-rich vegetables. 2.Fat and protein: patients with liver cancer are often combined with cirrhosis, gastrointestinal edema and poor appetite, so they should eat less and more meals, increase the calorie of the diet and eat crude fat that can be easily digested and absorbed. 3.Vitamins: Vitamin A, C, E and K have certain auxiliary anti-tumor effects. Vitamin C is mainly found in fresh vegetables and fruits. Carotene can be converted into vitamin A after entering the body, so liver cancer patients should have more vegetables and fruits with more vc. 4.Inorganic salt: i.e. minerals. Nutritionists divide inorganic salts into two categories: macronutrients, such as calcium, sodium, potassium, etc.; trace elements, such as selenium, zinc, iodine, etc.. Scientists found that selenium, iron and other minerals have anti-cancer effects. 5.Liver cancer patients can have some meat food for lunch: they should eat more vegetables for dinner, and should not eat fried food, and it is better not to eat bones and thorny food.