The invention provides a holographic-imaging-based rearview system and belongs to the technical field of automobile parts. The holographic-imaging-based rearview system comprises an image information collecting module, an image information processing module, an image information storage module and a projection module. The image information collecting module collects image signals behind an automobile and on the two sides of the automobile and sends the image signals to the image information processing module. The image information processing module conducts data conversion on the image signals and sends the image signals to the image information storage module and the projection module. The image information storage module stores the image signals. The projection module plays the image signals. According to the holographic-imaging-based rearview system provided by the invention, the conditions behind the automobile or on the sides of the automobile are observed through a holographic imaging method, a traditional rearview mirror can be replaced, the function of the traditional rearview mirror is achieved through the holographic imaging method, defects related to the traditional rearview mirror are avoided, and the disadvantage of visual blind angles of the traditional rearview mirror is avoided.