The invention discloses a 3D (three-dimensional) camera-recording and displaying integral machine with zooming by multiple-lens switching. The integral machine is characterized by comprising a lens group, wherein the lens group is transversely arranged, the inside of the lens group is provided with a plurality of lenses, all lenses in the lens group are electrically connected with a control device, and the control device comprises a double-lens 3D image synthesizing module, a control chip module, a storage device, a power source device and a communication interface module. As an improvement, the lenses in the lens group are high-definition camera lenses, the high-definition camera lenses are different in focuses, and all the high-definition camera lenses are symmetrically and transversely arranged at the back side of a display. The integral machine has the advantages that the zooming range is wider and more accurate, the shooting and zooming of 3D videos can be carried out by non-professional persons, meanwhile, the price is lower, and the popularization and the large-scale production are favorably realized.