Leucorrhea pulling is a phenomenon that occurs in women near ovulation with a large amount of secretion, transparent pulling, which may be long, not easily pulled off, transparent egg white, clear and transparent and elastic. It is under the influence of ovarian sex hormones, the cervical gland cells secrete mucus, and near ovulation, with the continuous growth of estrogen, the mucus secretion is abundant, thin and transparent, and can be pulled to more than ten centimeters. The cervical mucus is a hydrogel rich in glycoproteins, plasma proteins, sodium chloride and water, of which the glycoproteins are reticulated and under the constant stimulation of estrogen, the mesh grows, which facilitates the penetration of sperm near ovulation. Women who want to get pregnant can choose to have intercourse when leucorrhea pulling occurs, which can increase the chances of conception.