This creation provides a kind of athletic undergarment structure comprising two cups, two shoulder belts, two back buckle bands, a support chest strap and a mesh-like area. Two cup separately includes an at least rib, which corresponds to the outstanding Le band of what human breast and can prevent the outstanding Le band aging of breast and make mastoptosis； The fin of two back buckle bands of this creation can prevent breast fat from shifting, and can reinforce Hou back stiffness, and the netted block between two fin of position what can also promote air permeability when user's what is worn； The mesh-like area is made of nonelastic cloth, the sense of discomfort that breast shakes when person's what capable of reducing using moves and friction is caused.本創作提供一種運動內衣結構，其包括兩罩杯、兩肩帶、兩背扣帶、一托胸帶以及一網狀區域。該兩罩杯分別包含至少一肋條，該肋條係對應於人體乳房懸勒帶並可預防乳房懸勒帶老化而使乳房下垂；本創作之兩背扣帶之肋片可防止胸部脂肪移位，並可加強後背挺度，且位於兩肋片之間的網狀區塊亦可提升使用者於穿著時之透氣度；該網狀區域係由無彈性布所組成，可減少使用者於運動時乳房晃動及摩擦所造成之不適感。
