The presence of fecal and bloody discharge in the vagina is due to the fact that the cancer of the anterior rectal wall in women can infiltrate the posterior vaginal wall when it penetrates the intestinal wall, causing increased leucorrhea; if it penetrates the posterior vaginal wall, it forms a rectovaginal fistula, thus causing fecal and bloody discharge in the vagina. This is one of the clinical symptoms of rectal cancer. Then, what are the factors that cause fecal and bloody discharge in the vagina? Let’s learn more about them together. 1, diet and carcinogenic substances: there are also some people like to eat barbecued food, but these foods will have a lot of carcinogenic substances, we should eat less of these carcinogenic substances. Epidemiological studies show that the occurrence of colorectal cancer is significantly related to economic status and dietary structure. The incidence rate of colorectal cancer is significantly higher in economically developed regions, geographic areas and groups with high proportion of animal fat and protein in the diet and low fiber content. The exact mechanism of the relationship between dietary structure and colorectal cancer is not fully understood. It is generally believed that it may be related to the metabolites of animal fats, bacterial decomposition products and the increased absorption of toxins in the intestine due to the slowing down of intestinal peristalsis in the state of low-fiber diet. 2, genetic factors: genetics is more common in our family, the chance of rectal cancer occurring in people with rectal cancer is much greater than normal people. In addition to patients with colorectal cancer caused by familial polyposis or ulcerative colitis malignancy, about 5-10% of other colorectal cancer patients have an obvious family history of tumors, collectively known as hereditary non-familial polyposis colorectal cancer, also known as Lynch syndrome. 3, rectal adenoma carcinoma: rectal adenoma pan refers to elevated lesions protruding from the rectal mucosal surface to the intestinal lumen, including adenomas (including villous adenomas), childhood type polyps, inflammatory polyps and polyposis, etc.