A kind of structure-improved of physiological brief,It is that the trousers body interior of one or four jiaos of trousers shapes of what is equipped with the constraint lining of a tool resilient sheet-like,To tight beam human body across lower portion； Two ends of constraint lining are respectively formed a first end and a second end,The position of partial below on front side of the first end system fixed what trousers ontology,And second end system can link the Hou side of the what trousers ontology,Constraint lining is set to pass through the hip lower portion between two trouser legs of trousers ontology,And the constraint lining what across between the position of lower portion and the trousers ontology at least formed with a gap,Using enables complementary amenities to fix in what constraint lining,And have the ability of elasticity using constraint lining,Amenities is allowed suitably to be bonded what human body across lower position,And it is not likely to produce the sweat pants structure of displacement.一種生理褲之改良結構，係於一四角褲形狀的褲本體內部設有一具彈性片狀之束縛內裡，用以緊束人體跨下部位；該束縛內裡二端分別形成一第一端及一第二端，該第一端係固定於該褲本體前側偏下方之位置，而第二端係可連結於該褲本體的後側，使該束縛內裡通過該褲本體二褲管間的胯下部位，且該束縛內裡於跨下部位之位置與該褲本體間至少形成有一間隙，藉以使輔助性的衛生用品得以固定於束縛內裡上，並利用束縛內裡具彈性之能力，讓衛生用品適宜地貼合於人體跨下位置，且不易產生位移之衛生褲結構。
