Increased leukorrhea, colorless and odorless, may be due to ovulation, when increased levels of estrogen and progesterone may promote increased vaginal and cervical fluid secretion, resulting in increased leukorrhea. However, milky white or transparent, without odor, vaginal itching or vulvar itching, is a physiological phenomenon and is not a pathological change. If a woman is pregnant, especially in the early stages of pregnancy, the hormonal changes in her body may cause an increase in cervical or vaginal discharge, which is also a physiological phenomenon and does not require special treatment. If it is accompanied by vaginal itching or pain, it may be caused by vaginal inflammation or mycoplasma infection, which needs to be treated with medication under the guidance of a doctor after a clear diagnosis is made by routine leucorrhea and culture of mycoplasma.