The tests needed for vaginal watery discharge include: ultrasound and other imaging tests, tumor marker tests, and routine leukorrhea tests. 1. Imaging examination such as ultrasound: If there is clear yellowish-red or reddish watery discharge from the vagina, when tubal cancer is considered. Through ultrasonography, the presence of fallopian tube cancer can be ruled out. If necessary, pelvic CT as well as pelvic MRI can also be further examined. 2. Tumor marker examination: when considering the existence of fallopian tube cancer, except through imaging examination, it is also necessary to carry out tumor marker examination. Most women with fallopian tube cancer have elevated tumor markers, mainly CA125. Most women with fallopian tube cancer will have elevated tumor markers with CA125 as the main marker. If cervical cancer is considered to exist, it will generally show elevated tumor markers with SCC and CA125 as the main markers. 3. Leukorrhea routine: when women suffer from vaginitis, due to the increase of secretion, watery discharge can appear, accompanied by odor. It is recommended to perform routine examination of leukorrhea to make a clear diagnosis. When there is vaginal watery discharge, it may be a normal manifestation of ovulation, or consider the existence of fallopian tube cancer, cervical cancer or vaginitis. Items that can be examined include ultrasonography and other imaging examinations, tumor marker examination and routine examination of leukorrhea, and it is recommended to go to the hospital in time to improve the examination and treat the symptoms.