Constipation is a common clinical disease and a common disease, many patients are accustomed to taking weight loss tea to promote defecation, but weight loss tea such drugs should not be taken for a long time, many of the weight loss tea on the market contain rhubarb, mannitol, senna and other Chinese herbal ingredients, the active ingredients of these Chinese medicines contain a substance called “anthraquinone” class, more, long time to take It is easy to lead to colonic melanosis, which can be seen as snakeskin-like changes in the inner layer of the intestinal wall under colonoscopy. After the formation of colonic melanosis, the peristaltic function of the colon becomes poor, and it is difficult for the stool to move forward in the intestine, which will make the already existing constipation more serious.