At the age of 12, girls are already in puberty, when there is more vaginal discharge and more leucorrhea. If there is no yellow material in the leucorrhoea and there is no chest congestion, it is not a big problem. The girl should pay attention to local cleanliness, wipe from front to back after each urination, and after the bowel movement, it is best to wash the local area with warm water to keep the local area clean and clean to prevent vulvovaginitis. 12-year-old children should pay attention to changing their underwear every day, in addition to pay attention to changes in the color of the underwear, try to choose the best light-colored underwear white, which is conducive to observing the color of the leukorrhea, if the leukorrhea is found to be yellowish, with a If you find that the white belt is yellow in color, has a foul odor or is locally itchy, etc., it is recommended to seek medical examination.