Patients with liver cancer can eat protein powder. For the diet of liver cancer patients, high protein and low fat food is advocated, avoiding too greasy, spicy and stimulating food, so as not to aggravate the burden of gastrointestinal tract or liver. Protein powder, as a high protein food, is favorable and harmless to patients with liver cancer, so patients with liver cancer can eat protein powder. As the most common malignant tumor of liver, liver cancer has a close correlation with Hepatitis B virus infection, excessive alcohol consumption, and aflatoxin infection at present. After the diagnosis of liver cancer is clear, surgical treatment is usually advocated. If patients cannot be treated surgically, palliative treatments such as interventional radiofrequency or even molecularly targeted drug therapy can be considered, with the aim of prolonging patients’ life and improving their quality of life.