If the leukorrhea is like water and has no odor, it is recommended to investigate the cause of the leukorrhea instead of blindly giving medication. In this case, the possibility of fallopian tube cancer should be ruled out first, because the main feature of fallopian tube cancer in clinic is that the leukorrhea is like water, and the amount is particularly large, and there is a mass in the lower abdomen through ultrasonography, and there is an increase in carcinoembryonic antigen and carcinoma antigen through three gynecological oncological tests in clinic, which suggests that timely surgery should be given to the treatment. In addition, if the leukorrhea is like water and there is no odor in the clinic, we should rule out whether it is caused by vaginal vesicovaginal fistula, if there is a vaginal vesicovaginal fistula, it will lead to the discharge of urine from the vagina, so we have to do the examination to find out whether it is due to the leukorrhea produced by this case is like water, and then give the treatment.