The application discloses a dental zirconia restoration material with uniform transition of strength and color, and a preparation method thereof. The preparation method includes the following steps: (1) pouring colored zirconia powder into a dry pressing mould in accordance with a sequence of the strength from high to low and the color from dark to light for each layer, and performing dry pressing； (2) performing isostatic cool pressing after the dry pressing； (3) performing pre-sintering after the isostatic cool pressing to obtain a greenware； and (4) performing CAD/CAM cutting on the greenware, and finally performing final sintering to obtain the dental zirconia restoration material. In the present application, the strength of a restoration can gradually increase from a cut end to the neck, the wear to adjacent teeth and jaw teeth is reduced, and long-bridge restoration can be realized due to the high strength of the neck.
