The　aim　of　this　study　was　to　assess　the　influence　of　bone　mineral　density　and　hip　geometry　on　the　fragility　fracture　of　femoral　neck　and　trochanteric　region.　There　were　95　menopausal　females　of　age　＞=　50　years　with　fragility　fracture　of　hip,　including　55　cases　of　femoral　neck　fracture　and　40　cases　of　trochanteric　fracture.　Another　63　non-fractured　females　with　normal　bone　mineral　density　(BMD)　were　chosen　as　control.　BMD,　hip　axis　length,　neck-shaft　angle　and　structural　parameters　including　cross　surface　area,　cortical　thickness　and　buckling　ratio　were　detected　and　compared.　Compared　with　control　group,　the　patients　with　femoral　neck　fracture　or　trochanteric　fractures　had　significantly　lower　BMD　of　femoral　neck,　as　well　as　lower　cross　surface　area　and　cortical　thickness　and　higher　buckling　ratio　in　femoral　neck　and　trochanteric　region.　There　were　no　significant　differences　of　BMD　and　structural　parameters　in　the　femoral　neck　fracture　group　and　intertrochanteric　fracture　group.　Hip　axis　length　and　neck-shaft　angle　were　not　significantly　different　among　three　groups.　The　significant　changes　of　BMD　and　proximal　femur　geometry　were　present　in　the　fragility　fracture　of　femoral　neck　and　trochanteric　region.　The　different　types　of　hip　fractures　cannot　be　explained　by　these　changes.