Uterine fluid is clinically categorized into physiological and pathological, generally physiological uterine fluid during menstruation can be disappeared in 3-7 days, while for pathological formation of uterine fluid, it can be eliminated in 1-2 weeks under active treatment. Clinically, there are many reasons for the appearance of uterine fluid, and the time of elimination varies from one reason to another. The time of elimination of uterine fluid during menstruation should be determined according to the time of menstrual bleeding, and it can be eliminated in 3-7 days. Pathological uterine fluid formation is mainly due to endometritis, cervical canal adhesion and other diseases, different diseases caused by the uterine fluid, in the clinical treatment method is not the same, so the disappearance time is also different. Generally, fluid in the uterus caused by uterine operation can disappear in about 1-2 weeks after active treatment, and fluid in the uterus caused by inflammatory diseases can disappear in about 2-4 weeks after active anti-infection treatment. Therefore, the presence of fluid in the uterine cavity should be promptly consulted in specialized hospitals and actively treated by doctors according to the specific conditions.