Pelvic fluid 20MM should take measures according to the cause. The cause of pelvic fluid parcel pelvic inflammatory disease, appendicitis, menstrual flow, intra-abdominal hemorrhage, etc., should be based on the cause of the choice of treatment, do not self-medication, so as not to delay the aggravation of the condition. 1. Pelvic inflammatory disease: pelvic inflammatory diseases including endometritis, cervicitis, tubo-ovarian inflammation, peritoneal inflammation and so on will cause pelvic fluid increase, it is recommended to consult a doctor to clarify the condition and follow the doctor’s instructions to use moxifloxacin, metronidazole and other antibiotic medication, and if necessary, surgical treatment. 2. Appendicitis: appendicitis or even appendiceal abscess can cause abdominal pain and increase in pelvic fluid retention. It is recommended to take medication or surgical removal of the appendix as prescribed by the doctor after the condition is clarified. 3. Menstruation: During menstruation, the pelvic cavity may be mildly congested and mildly inflamed, and a small amount of pelvic fluid may appear, and anti-inflammatory drugs such as ofloxacin capsules and tinidazole capsules can be used to relieve the symptoms as prescribed by the doctor, and if there is no other symptom or disease, it can also be observed temporarily as prescribed by the doctor. 4. Intra-abdominal bleeding: including ectopic pregnancy, corpus luteum rupture, intra-abdominal microvascular rupture and other causes of intra-abdominal hemorrhage, the amount of very small may be accompanied by mild abdominal pain or asymptomatic, ultrasound can be suggestive of a small amount of fluid accumulation in the pelvis, if the back of the fornix puncture can be extracted in general non-coagulable blood, the need for timely medical care to clarify the condition of the disease, timely treatment, to avoid the aggravation of the condition of the delayed situation, such as hemorrhagic shock. In addition, malignant tumors may also lead to ascites and pelvic effusion. If pelvic effusion occurs, it is recommended to go to the hospital for examination in time to identify the cause of the disease and cooperate with the treatment.