Aunt refers to menstruation. Ten years old to menstruation is a normal situation, the girl’s puberty development period is generally in ten to fourteen years old, due to the improvement of living standards, daily intake of more nutrients, a small number of girls also have the possibility of advancement, so the girl is ten years old to menstruation is considered normal, parents do not have to be too nervous, pay attention to correctly guide the child’s mind changes can be. Girls will generally enter puberty at about 10 years old, after entering puberty will mainly show the appearance of secondary sexual characteristics, such as breast development, body hair growth, menstruation, as well as height significantly higher, etc., and girls in the first menstruation for a period of time is not too regular, parents need to observe the child’s menstrual situation, pay attention to pacify the child’s state of mind. If a girl menstruates at or before the age of eight, it is called precocious puberty. If she does not menstruate when she is older than sixteen, it is called primary amenorrhea, and it is necessary to consider that the child may have abnormalities of the reproductive organs. Menstruation in girls between the ages of ten and fourteen is a normal physiological phenomenon, and if there are no uncomfortable symptoms there is no need to worry, just need to do a good job of daily protection and cleaning care.