General anesthesia for ablation procedures usually requires no eating or drinking for 6 hours, and after 6 hours, the timing of eating will be determined on a case-by-case basis. Liver cancer ablation is a form of treatment for liver cancer, mainly utilizing extracorporeal ultrasound or CT under localization. No matter what kind of surgery, as long as general anesthesia is chosen, it is generally required not to drink or eat within 6 hours after the surgery. Because the anesthesia reaction is not completely disappeared within 6 hours after the operation, eating too early is easy to cause intestinal obstruction, easy to induce vomiting, and in serious cases, may be suffocated, a greater threat to the patient’s life. After 6 hours, if the intestinal function is still paralyzed or the gastrointestinal function is not fully restored to normal, it is not recommended to eat immediately, and it is necessary to observe for a period of time, and then eat after the patient is fully awake and the gastrointestinal function is restored to normal, and the patient can return to the normal eating habit in 5~7 days in general. After liver cancer ablation general anesthesia, patients’ diet should be light, less stimulation, spicy and so on. If there is any doubt about diet, it is recommended to consult the doctor and strictly follow the doctor’s requirements.