Colorectal cancer is one of the most common malignant tumors of the gastrointestinal tract. With the improvement of the quality of life, there is a significant trend of increasing colorectal cancer in terms of food intake of meat and protein high in fat for a long time. Dietary factors can play a greater role, and active and effective nursing measures must be taken in response to the morbidity characteristics and related influencing factors. The reason for this is the deficiency of vital energy in the spleen and kidneys, long-standing diarrhea and dysentery, and the stagnation of dampness in the lower part of the body. The spleen and stomach are not in harmony with the worry, dampness and heat; or mistakenly eat unclean products, damage the spleen and stomach, breeding dampness and heat can lead to dampness and heat downstream, infiltrating the intestines, intestinal Qi and blood does not run smoothly, and over time the steam becomes heat and poison, blood and flesh corruption, so see abdominal pain and diarrhea, mucus, pus and blood in the stool dampness, poison, phlegm, fetish, cancer, increasingly more intestinal tract narrowing, defecation difficulties, the condition is extended spleen and stomach weakness, biochemical weakness, Qi and blood Deficiency of spleen and stomach, deficiency of spleen and kidney, even yin and yang are mixed. Colorectal cancer starts slowly, early stage is mainly stool habit changes, stool frequency increases, stool straining or constipation alternately, stool becomes thin. In the late stage, the cancer metastasizes to different parts of the body, and there are liver enlargement and gangrene, abdominal packet burning ascites, intestinal obstruction, persistent pain in the skeleton tail, and poor urination, etc. Therefore, a reasonable diet is conducive to the orifice to enhance physical fitness and improve the immunity of the body with obvious effect, which can promote early recovery of patients.