Watery vaginal discharge in women may be a normal physiological phenomenon, or it may be caused by some diseases such as vaginitis, fallopian tube disease, uterine disease and so on. 1. Physiological phenomenon: During some periods of the menstrual cycle, such as ovulation or premenstrual period, the discharge may be watery, which is a normal physiological phenomenon, and the patient does not need to worry too much. 2. Vaginitis: watery vaginal discharge may be due to bacterial imbalance in the vagina, anaerobic bacteria are the dominant flora, leading to vaginitis, watery discharge may also be accompanied by fishy odor. 3. Fallopian tube disease: female vaginal discharge is watery, there may be fallopian tube disease, such as inflammation of the fallopian tube, fallopian tube cancer, etc., which may increase the exudate of local tissues and cause watery secretion. 4. Uterine diseases: women with watery vaginal discharge may also be caused by uterine diseases, such as endometritis, cervicitis, cervical cancer, etc., which may cause local tissue changes and make the secretion watery. There may be other reasons for the watery vaginal discharge, so it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.