The sensation of swelling in the abdomen and anus after intercourse should be considered for both functional and organic reasons. Functional is mainly due to the impact on the pelvic organs due to mechanical stimulation during sexual intercourse, resulting in abdominal and anal swelling, which is relieved immediately after rest. This is most common around the time of ovulation, when follicular fluid is released into the pelvic cavity and rectal fossa after ovulation, resulting in peritoneal irritation and a feeling of anal swelling. Organic causes include acute pelvic inflammatory disease, chronic pelvic inflammatory disease, endometriosis, pelvic venous stasis syndrome, etc., which require further examination and targeted treatment of these diseases.