If there is a sense of sagging in the lower abdomen, it can be seen in pelvic infection, pelvic effusion, which is also very common. Ultrasound can also find the performance of liquid dark areas. In addition, if female patients have uterine fibroids, they will also show similar symptoms and irregular bleeding. If necessary, they can choose surgery. Simple fluid accumulation and urinary system infection can be treated with intravenous anti-inflammatory therapy.