The invention discloses a scanning device and a scanning method. The scanning device comprises a scanning platform and a bare engine. The scanning platform is used for loading an object and is provided with scanning origins. The bare engine comprises a loading seat, a detecting element and an image capturing component. The detecting element is arranged on the loading seat; when the bare engine ispositioned at detecting position, the detecting element is positioned at the position corresponding to the scanning origins and is used for detecting the object. The image capturing component is arranged in the loading seat and used for capturing the image of the object.