In patients with breast enlargement, the distance between the two breasts is wider than normal, and the nipples are pointing outward, so there is no cleavage. Breast enlargement refers to the wide spacing between the breasts on both sides, which is manifested by the physical signs that the distance between the breasts on both sides is wider than one half of the shoulder width, and the nipples on both sides are pointing to the outer side. There are both congenital and acquired causes of breast enlargement, and acquired causes are mainly related to inappropriate underwear size and incorrect sleeping posture. Women with symptoms of breast enlargement are advised to consult a doctor in time to determine the degree of enlargement through physical examination. Mild cases of breast enlargement can be gradually adjusted by wearing the right size of corset, massage, yoga and exercise exercises. Severe breast enlargement requires surgery at a specialized plastic surgery or breast surgery department.