There are several possible reasons for the fishy smell of vaginal water: 1. There may be vaginal inflammation. You should check the white belt routine to see how clean the vagina is and whether there are trichomonas, mycobacteria, bacteria or other miscellaneous infections. 2. If there is cancer in the cervix, there will be an increase in vaginal discharge. 4. Gynecological ultrasound is recommended to see if there are abnormalities in the uterus, adnexa and endometrium, especially to check if there is endometrial hyperplasia or endometrial polyp, if there are endometrial related diseases, there will be an increase in vaginal discharge with odor. If you have endometrial disease, you may have increased vaginal discharge and odor.