Cancer of the gastrointestinal tract, which has a high incidence in our country, is a lesion formed by an irreversible reaction of the normal tissues of the gastrointestinal tract, including abnormal hyperplasia, ulcerative lesions, and the formation of masses. Normal tissues of the gastrointestinal tract such as the mucosa are smooth and the flagella are neater. Because the mucosa consists of a variety of cells, once the cells undergo abnormal changes, they will gradually develop from precancerous lesions to cancer. The lesions are harmful to the organism and can deplete the organism’s nutrition, making the patient’s nutritional situation worse and worse.