There are two types of pelvic fluid: one is physiological fluid, which does not cause tummy pain. The other is pathological effusion, which will cause tummy pain because pathological effusion is often found due to chronic inflammation of the pelvic cavity resulting in massive exudation. Pelvic inflammatory disease can cause local tissue adhesions, which can lead to stomach pain. When you do a gynecological examination, you will find that the uterine appendages are not moving well and there is significant pressure pain. This condition must be actively treated, for example, intravenous drip antibiotics can be combined with metronidazole for the treatment of anaerobic bacteria co-medication, continuous static drip for 1 week. In the diet do not eat spicy and acidic food and stimulating food, and do not have sex. It is recommended to do hot compresses on the lower abdomen to promote the absorption of inflammation through heat circulation.