If after the end of menstruation, vaginal discharge of yellow water-like secretion and no odor, in the clinic, the most common cause is due to the local inflammation of the vagina, in the menstrual period of the local resistance of the vagina is down, the body’s immunity is also down, so it is possible to take care of improperly in the menstruation period, resulting in inflammatory reaction of the vaginal mucosa. It is recommended that this situation is best to go to the hospital to do high magnification of the routine laboratory tests of the leukorrhea, according to the results and then give the appropriate clinical treatment, in the menstrual period is also recommended: first, must be diligent in changing the sanitary napkin; second, it is recommended to use cotton sanitary napkins, to ensure that the local ventilation is good; third, to maintain local cleanliness, wash the vulva with warm water 1-2 times a day, to reduce the chances of pathogenic bacteria infection. In addition, if the vaginal yellow water after menstruation but no odor, may also be due to pelvic inflammatory disease or cervical chronic inflammation, it is recommended that the combination of clinical history, combined with the results of gynecological examination can make a preliminary diagnosis.