The back of vagina is the rectum, and vaginal tumor involving the rectum may cause stool to enter the vagina from the rectum, thus leading to defecation from the vagina. There is rectum behind the vagina, and the thinnest place between the two is only muscle and mucous membrane structure, etc. If the vaginal tumor involves the rectum, it may cause rectovaginal fistula, which leads to the rectal content in defecation or not, no matter the anal sphincter muscle contraction or not, the feces may enter into the vagina from the rectum, which leads to the defecation from the vagina, and seriously reduces the quality of life of the patients. Early treatment of vaginal tumors is more effective, and it is recommended that patients should be treated as early as possible once they find out that they have vaginal tumors, so as to avoid delaying the condition, which will lead to irreversible condition and seriously reduce the quality of life.