The main cause of anal drop with back pain is to consider several diseases: 1, intestinal diseases are the main cause of anal drop, when there is inflammation in the rectum, inflammatory factors can directly stimulate the rectal wall, so that the excitement of the defecation center stimulates the rectum to defecate, thus producing a drop, probably hemorrhoids, especially internal hemorrhoids, in the occurrence of internal hemorrhoids will appear obvious prolapse to produce anal drop, while hemorrhoids prolapse will also make the anus The main cause of back pain is urinary system diseases, such as kidney stones or upper urinary tract infections. 3, additional consideration should be given to pelvic inflammatory disease, when the pelvic cavity is infected inflammatory factors will stimulate the pelvic floor to produce a feeling of defecation, which can be accompanied by systemic symptoms, such as low fever, easy fatigue, back pain, often aggravated before and after menstruation. It is often aggravated before and after menstruation.