After the trauma of major surgery, the patient’s physique will be changed, so the main thing after liver cancer surgery is to supplement nutrition and restore the patient’s physique. Fresh chicken, duck, fish, fresh vegetables and fruits are all allowed, but we should pay attention to a reasonable and balanced diet and remember not to drink alcohol, smoke and eat pickled products. Special attention should be paid to herbal medicines that are toxic to the liver and must be contraindicated because the patient needs a period of time to recover from postoperative liver function after surgical trauma. The prognosis of patients is related to their nutritional status. Good recovery after surgery and better tolerance of subsequent treatment are especially important for subsequent recovery and treatment. Postoperative patients with hepatocellular carcinoma should live a regular life, exercise in appropriate amount and ensure sufficient sleep. The diet of liver cancer patients must pay attention to cleanliness and hygiene, and avoid unclean diet to avoid gastrointestinal infection, which can be life-threatening.