Nowadays, people’s living standard is constantly improving and people’s diet is also changing, but the chance of fecal and bloody secretion in the vagina has also increased a lot. In order to avoid the situation of fecal and bloody secretion in the vagina, which will give us more harm, let’s learn together what are the causes of its occurrence! As it is female rectal cancer, female rectal anterior wall carcinoma can infiltrate the posterior vaginal wall when it penetrates the intestinal wall, causing increased leucorrhea; if it penetrates the posterior vaginal wall, it forms rectovaginal fistula, and fecal and bloody secretions appear in the vagina. The cancer of the posterior lateral wall of the rectum can infiltrate the pelvic wall, sacrum and sacral plexus after penetrating the intestinal wall. It causes pain and swelling in the coccyx. The etiology is still not very clear, and its development is related to social environment, dietary habits, genetic factors, etc. Rectal polyps are also a high risk factor for rectal cancer. It is basically accepted that high intake of animal fat and protein and insufficient intake of dietary fiber are the high-risk factors for rectal cancer. The above are the common causes of fecal and bloody secretion in the vagina, after understanding them, we can better prevent the occurrence of fecal and bloody secretion in the vagina.