Generally, patients after colon cancer surgery are mainly based on liquid food. It is suggested that rice, wheat, eggs, mushrooms, spinach and other foods can be used to regulate the body. It is suggested that patients can consider biological immunotherapy, which is a method of culturing and expanding immune cells collected from patients in vitro and then reinfusion them into patients. It can kill cancer cells, improve human immunity, improve the quality of life of patients and prolong the survival time.