If the leukorrhea is very little, clinically it is often caused by the following reasons: 1. because the cervix has been operated on before, causing local anatomical changes, which reduces the secretion of the cervix, so the leukorrhea will decrease. 2. it is probably caused by estrogen deficiency, when the estrogen is insufficient the cervical secretion and vaginal secretion are relatively reduced, so the leukorrhea will decrease. 3. it is caused by the decline of ovarian function, when When the ovarian function declines, the estrogen in the body will decline, so there will be a decrease in vaginal secretions, for example, menopausal women tend to have less vaginal secretions, and vaginal dryness will occur. If women of childbearing age have low leucorrhea, they should be examined and treated for the cause.