The common causes of uterine fluid accumulation of 14mm are during menstruation, endometritis, malformation of the reproductive tract, etc. If it is physiological factors, no treatment is needed; if it is pathological factors, it can be treated according to the causes. 1. During menstruation: when the fluid is 14mm, it is physiological, no need to worry too much, and can be absorbed by itself a few days after the end of menstruation. 2. Endometritis: If the fluid in the uterine cavity is 14mm caused by endometritis, anti-infective treatment should be carried out at this time, commonly used drugs include three generations of cephalosporins, such as cefixime, cefoperazone, ceftazidime, and metronidazole, etc., and intrauterine catheter can also be used to drain the fluid. 3. Reproductive tract deformities: congenital or acquired reproductive tract deformities should be treated with timely surgery to restore the physiological anatomy of the reproductive tract. Normal women in general conditions uterine fluid does not exceed 10mm, if uterine fluid, please go to the hospital for a more comprehensive examination, and timely treatment.