An augmented reality device for minimally invasive positioning of a pedicle screw, comprising a binocular unit, a second camera unit and a control unit, wherein the control unit receives a vertebra provided with at least two positioning rods Stereoscopically scanning the image data, and transmitting the image data to the binocular unit to generate a 3D augmented reality image containing at least two positioning marks, and the control unit provides a tracking and positioning function by the two camera units The at least two positioning marks of the 3D augmented reality image can overlap with the at least two positioning rods, and the at least one guiding track provided by the operator can be provided by the 3D augmented reality image At least one metal stud is inserted into the vertebra and then at least one pedicle screw is locked into the vertebra via the guidance of the at least one metal stud.一種用於椎弓根螺釘微創定位的擴增實境裝置,具有二目鏡單元、二攝影單元及一控制單元,其特徵在於:該控制單元係藉由接收設置有至少二定位桿之一脊椎骨的立體掃描影像資料,再將其傳送至所述二目鏡單元以產生含有至少二定位標記之一3D擴增實境影像,且該控制單元係藉由所述二攝影單元提供一追蹤定位功能使該3D擴增實境影像的所述至少二定位標記能和所述至少二定位桿保持重疊,俾利一手術操作者能夠藉由該3D擴增實境影像所提供的至少一導引軌跡將至少一根金屬釘插入該脊椎骨,然後再使至少一根椎弓根螺釘經由所述至少一根金屬釘的引導而被鎖入該脊椎骨中。