The reasons for buttock pain after intercourse are as follows: 1, it may be the incorrect posture of intercourse, this is because if the incorrect posture of intercourse may lead to pelvic blood stasis, blood stasis in the pelvis leads to pelvic vascular expansion, local tissue hypoxia and anaerobic metabolism, anaerobic metabolism produced by the material, will stimulate the sensory nerves of the blood vessel wall and the muscles of the buttocks, thus producing pain, this is one of the most common reasons for buttock pain after intercourse. 2, consider women suffering from gynecological diseases, such as common vaginitis, endometritis, and pelvic inflammatory disease, when women suffer from inflammation, the mucosa and blood vessels of these parts are in a state of expansion, congestion and swelling, if in this case intercourse will stimulate the increase of inflammatory secretions, so that the body’s sensitivity to these secretions is enhanced, which can also produce the feeling of pain in the buttocks. .