Colon lesions refer to diseases occurring in the colon, common diseases are colon polyps, chronic atopic colitis, amoebic enteropathy and acute bacterial dysentery, as follows: a. Colon polyps refer to elevated lesions on the surface of the colonic mucosa protruding into the intestinal lumen, mainly caused by inflammatory stimulation genetic or dietary factors. The most important symptom of chronic atopic colitis is abdominal pain, diarrhea with pus and blood, mucus, a sense of urgency, a long and often recurrent course of the disease, persistent. Amoebic enteropathy, the disease starts slowly, the main symptoms are pain in the lower abdomen and an increase in the number of stools, feces with corruption, fishy smell of jam-like stools, can also be accompanied by pus and blood. Fourth, acute bacterial dysentery, manifested as an increase in the number of stools with fever, fatigue symptoms, usually due to unclean diet or lack of hygiene in the summer and autumn.