The breasts of an 8 1/2 year old girl are usually raised, which is normal. Girls with raised breasts are generally considered to be starting breast development. 8-year-old girls who are better nourished and chubby may develop their secondary sexual characteristics earlier, causing their breasts to bulge, which may be a normal developmental manifestation, and do not need to be overly concerned. However, it is important to avoid eating foods containing much estrogen and pay attention to weight control. If a girl’s breasts develop before the age of 8, it may be considered precocious puberty, which is mostly caused by eating estrogen-rich foods, certain medications, and so on, and may be manifested as breast bumps; in addition, breast diseases may also cause breast bumps, which need to be identified and intervened in the treatment. Diseases of the chest wall, such as benign and malignant tumors of the chest wall, can also cause breast protrusion. It is recommended that 8.5 year old girls with raised breasts should be examined in a timely manner to determine the cause of the breast bulge, so as to avoid delaying her condition.