There are more factors that cause uterine effusion, and the treatment varies according to the type. Most of the effusions are caused by chronic inflammation of the endometrium due to bacterial or viral infection, which causes inflammatory secretions that do not flow out or do not drain well and collect in the uterine cavity, resulting in effusion. This situation requires active consultation with a gynecologist, a gynecological examination and routine blood tests, and then a bacterial culture test to confirm the diagnosis of which germs are causing the inflammation, and then anti-inflammatory treatment with sensitive antibiotics. In general, chronic inflammation is best treated with a combination of Chinese and Western medicine, which is more effective. Some pregnant women develop uterine effusion during pregnancy due to bleeding from placental abruption caused by preterm miscarriage, which collects in the uterine cavity and causes uterine effusion. It is best to visit the obstetrician and gynecologist in time to have an abortion according to the specific situation to avoid causing uterine cavity infection. There are cases of spontaneous abortion or incomplete medication abortion, and there is continuous bleeding from the uterine cavity, which accumulates in the uterine cavity and causes fluid accumulation in the uterine cavity. In this case, it is necessary to consult an obstetrician and gynecologist in time to do the treatment of uterine evacuation. In short, if fluid accumulates in the uterine cavity, you need to see an obstetrician and gynecologist for specific examinations and treatment for different causes.