Chronic rectal and sigmoid colitis is not severe and refers to the presence of chronic inflammatory lesions in both the rectum and the sigmoid colon. The manifestation of the disease under e-colonoscopy is that the rectal mucosa, as well as the sigmoid mucosa, can be seen to be congested and edematous, and may be accompanied by scattered foci of erosion. However, there are no ulcer foci, much less masses or malignant tumors, so it is not serious. For chronic rectal and sigmoid colitis, treatment can be based on clinical symptoms with symptomatic medications. If there are symptoms of constipation or diarrhea, probiotics can be used for oral treatment. If there are lesions of erosion, you can also combine rehabilitation new liquid to promote mucosal repair, the specific use of drugs need to consult a specialist. In conclusion, chronic rectal and sigmoid colitis is not serious, is a benign disease, and can be cured.