Uterine rectal sink fluid of 20 mm indicates the presence of pelvic fluid, which is caused by prolonged chronic inflammatory stimulation, and should be given high priority at this time. Because the effusion can cause adnexitis and tubitis, it will be accompanied by abdominal pain, and some women will also be accompanied by high fever, which can affect normal life, so we should take oral medication for symptomatic treatment. For example, you can take oral Kun Fu Kang capsule, pelvic inflammatory net capsule, also can be intravenous infusion during menstruation, also can choose rectal, that is, anal administration of rehabilitation anti-inflammatory suppository, medication for 10 days, continuous medication for 3 months can reduce the uterus, rectal sink fluid, also can treat the pelvic fluid. During the treatment period, you must maintain good habits, do not eat spicy, stimulating food, pay attention to personal hygiene, so as not to cause cross-infection.