Leukorrhea that looks like water and becomes yellow when it dries is a sign of inflammation of the vagina. When the vaginal flora is imbalanced or cross-infection occurs during intercourse, vaginal discharge may be abnormal and may require vaginal medication. When cervical inflammation is present, the nature of the vaginal discharge may also change due to cervical erosion or nuchal cysts. This may result in watery or yellowish leucorrhea. When there is pelvic inflammatory disease or endometrial inflammation, the inflammatory exudate may be present due to prolonged irritation and may be watery or yellowish. In this case, go to the hospital for ultrasound and examination of vaginal discharge, and depending on the situation, take oral medication and vaginal plugs to treat vaginal inflammation, pelvic inflammation, and endometrial inflammation to avoid prolonged existence of this condition.