Pathological pelvic effusion often manifests clinically as recurrent lower abdominal pain and acute attacks due to decreased body resistance, often due to chronic pelvic inflammation leading to exudation, which causes exudate to flow into the rectal trap of the uterus. In clinical practice, an ultrasound examination will reveal a pelvic fluid collection. In this case, the anti-inflammatory injection can be good. Clinically, it is recommended to use broad-spectrum antibiotics, combined with the treatment of anaerobic bacteria metronidazole or tinidazole together with the medication, it is recommended to use the medication for 1 week, and then review the ultrasound, the vast majority of pelvic fluid will be slowly absorbed or significantly reduced. At the same time, you can also do hot compresses on the lower abdomen to promote local metabolism, accelerate blood circulation and promote the absorption of inflammation.