There is no scientific basis for the statement of “the three kinds of fish that bowel cancer is most afraid of”, which is false. Clinically, there is no such saying as “three kinds of fish are the most feared by bowel cancer patients”. For bowel cancer patients, it is necessary to balance the diet structure and avoid overeating. Choose foods rich in high quality protein and easy to digest, such as egg custard, lean minced meat, fish, etc., increase the intake of fresh fruits and vegetables, such as bananas, apples, spinach, lettuce, etc., to improve the intake of dietary fiber and keep the bowel movement smooth, and avoid the intake of overly greasy food, such as fatty meat, fried chicken, etc., so as not to aggravate the burden on the intestinal tract. It should be noted that patients with intestinal cancer can reduce the adverse effects of the disease through “early detection, early diagnosis and early treatment”, and most of the patients may survive for a long time, so it is suggested that patients should establish the confidence in treatment and actively fight against the disease. We suggest patients to build up confidence in treatment and actively fight against the disease. We should believe in scientific methods to cure the disease and should not blindly believe in rumors.