Pelvic fluid is not a disease in itself, but just an ordinary physiological phenomenon. Simple pelvic effusion with no clinical symptoms does not require special treatment. Pelvic effusion can be detected in normal people during ovulation and after menstruation and can disappear on its own when the amount is relatively small. When a large amount of pelvic fluid is present, it is necessary to be alert to tumors and inflammation. When a woman is standing or lying down, fluid in the abdominal cavity can accumulate toward the pelvic gap and can only be detected by ultrasound examination. 10-30mm pelvic fluid is overwhelmingly not a problem and does not require special treatment. Ultrasound performed during ovulation and after menstruation may also observe pelvic fluid, which also does not require treatment. If the amount of fluid is particularly large and already higher than 30mm, along with abdominal pain, fever, purulent leucorrhea, nausea, vomiting and other manifestations, it may be pelvic fluid caused by ovarian hyperstimulation syndrome, pelvic inflammatory disease, ovarian cancer, pelvic tuberculosis and so on, and should be treated by a professional doctor at a gynecologist without delay. Patients should increase nutrition, exercise, pay attention to the combination of work and rest, reasonable work and rest to improve the resistance of the body.