A kind of nail calibrator structure is integrally to be bent by wire body, and it includes have a flexible wrinkle folding portion, two straight line portions and two bending hook parts; The flexibility wrinkles folding portion for the bending line segment of continuous type, has predetermined flexible and elasticity, which distinguishes on two opposing end portions in integrally connected what flexibility wrinkle folding portion, on the end of each bending hook part system difference integrally connected what each straight line portion; Use reach operate conveniently, applicability is good and provides more comfortable fixed effect.一種指甲定型器結構,係由線體所一體彎折而成,其包含有一撓性皺摺部、二直線部及二彎勾部;該撓性皺摺部為連續型之彎折線段,具有預定撓性及彈性,該各直線部係分別一體連接於該撓性皺摺部之兩相對末端上,該各彎勾部係分別一體連接於該各直線部之末端上;藉以達到操作便利、適用性佳及提供較為舒適之定型效果。