Leukorrhea is usually seen during the follicular growth phase and ovulation. The closer the date of ovulation is, the more abundant and thinner the leukorrhea becomes, and the stronger the ability to pull the leukorrhea. Some women experience this pulling phenomenon for only 1 day, while others experience it for 2-3 days. Generally, the last 1 day of leukorrhea pulling is the day of ovulation, suggesting that ovulation will occur within 24 hours. Since the ovulation process is affected by various factors such as diet, emotion, environment, etc., it may be inaccurate to grasp the date of ovulation simply by observing the status of leukorrhea. If the menstrual cycle is regular, the date of ovulation is usually the 14th day before the next menstrual period, according to this time, together with the measurement of basal body temperature or ultrasound to monitor ovulation, to accurately grasp the date of ovulation, to improve the chances of conception.