1. An image displaying system, comprising: an image device receiving an external image message, the image device comprises: a device main body; an image assembly disposed at one end of the device main body; and a control assembly disposed in the device main body and electrically connected to the image assembly, and the control assembly receiving the external image message; a first carrying device including an imaging assembly pivotally disposed at one end and a virtual-image imaging assembly pivotally disposed at an opposite end, the first carrying device comprising: a bearing base with a surface dents inwards to form an accommodating space, wherein an end of the bearing base partially dents inwards and two inner walls at the end of the bearing base respectively form a connecting part; an imaging plane disposed on a surface of the imaging assembly facing the bearing base, wherein the surface of the imaging assembly protrudes outwardly to form an engagement part and the imaging assembly is pivotally connected to both of the connecting parts through the engagement part; and a display element pivotally disposed on one end of the virtual-image imaging assembly, wherein another end of the virtual-image imaging assembly is pivotally connected to the bearing base; and a second carrying device with one surface denting inwards to form a storage space; wherein, when the device main body is detachably coupled to the accommodating space and the control assembly is triggered, the control assembly transforms the external image message into a reversed image message and then controls the image assembly to project the reversed image message to the imaging plane, and the virtual-image imaging assembly maps the reversed image message of the imaging plane so as to produce a first image; alternatively when the device main body is detachably coupled to the storage space, the control assembly controls the image assembly to project the external image message to a target so as to produce a second image.