In general, pelvic fluid does not cause bleeding during intercourse. Physiological effusion is formed when follicular fluid accumulates in the abdominal cavity after ovulation. In general, physiological effusion is a relatively small amount of fluid, and there are no uncomfortable symptoms. If it is a pathological pelvic fluid, it usually means the presence of pelvic inflammatory disease. The amount of pathological fluid is relatively large, and will be accompanied by lower abdominal pain, lumbosacral discomfort and other symptoms of pelvic inflammatory disease, and in severe cases, fever, blood tests will show elevated white blood cells or neutrophils. The main reason for intercourse bleeding is whether there are cervical lesions. Women with intercourse bleeding need to go to the hospital for cervical TCT and HPV to check whether there are cervical lesions and whether there is high-risk human papillomavirus infection, and if there are abnormalities in these two tests, timely treatment is needed.