Female breasts stop developing around the age of 16-18, and women begin puberty at the age of 12-13. The onset of menstruation occurs at the beginning of puberty, and the breasts begin to enlarge. At the end of puberty, which is between 16 and 18 years old, breasts stop developing. During breast development, women should wear loose underwear, avoid excessive squeezing and collision, and increase nutrition to promote breast development. And during the breast development stage, do not eat foods with high estrogen content, such as chicken, farmed fish and shrimp to avoid causing excessive breast development and affecting women’s health. However, the time when women’s breasts stop developing is also related to the individual’s physical condition, genetics and nutritional supply.