Under normal circumstances in the non-menstrual period will have leukorrhea, leukorrhea can be more, can be less, is milky white and has no odor, relatively thin, usually not much. However, during the ovulation period, there will be more leukorrhea, mainly because of the hormone level changes in the body during the ovulation period, so it will lead to leukorrhea like egg white and relatively more, which is a normal phenomenon. Before menstruation, the endometrial glands begin to secrete vigorously, so it will also lead to an increase in leukorrhea, which is a normal physiological phenomenon. If there is no leukorrhea throughout the menstrual cycle, it is clinically abnormal and it is recommended that a sex hormone six test be performed to find out if the ovarian function and estradiol are normal and clinically manageable.