Sigmoid colon cancer refers to the tumor in the sigmoid colon of patients, which is located in the lower left abdomen of human body and is closer to the rectum, so when a tumor appears in the sigmoid colon, laparoscopic radical surgery for sigmoid colon cancer is usually required. For the first 3 days after surgery, patients are generally fasted from food and water, and when the intestinal anastomosis heals in about 3 days, they can eat liquid food or semi-liquid food, such as rice soup, thin rice, noodles and so on. When the patient’s gastrointestinal tract function is restored without abdominal pain in 4-5 days, and the exhaustion and defecation are completely normal, the patient can gradually transition to a normal diet, including rice and noodles, and also normal stir-fried or roasted vegetables. When patients are discharged from the hospital, they can basically transition to a normal diet at home, but it is recommended not to eat spicy and stimulating and greasy food, because it may lead to faster peristalsis of the gastrointestinal tract, which may lead to diarrhea in patients.