A method of manufacturing a dental all-ceramic restoration having an outer surface that has neither visible marks remaining from the removal of connecting bars nor local grinding traces and chipping, and that is smooth having uniform structure, wherein the method comprises the steps of: step milling a mould blank to obtain a cavity mould having an inner surface corresponding to an outer surface form of the digital wax pattern, or a convex mould having an outer surface corresponding to an inner surface form of the digital wax pattern; step injecting a ceramic colloid into the cavity mould formed in step 1, wherein after being dried, a hardened ceramic green body with less than 10% liquid phase content is formed; or sealing the convex mould formed in step 1 with a matched sleeve and then injecting the ceramic colloid into a shaping cavity between the sleeve and the convex mould, wherein after being dried, a hardened ceramic green body with less than 10% liquid phase content is formed; step according to the inner surface form of the digital wax pattern, or the inner surface form combined with a partial outer surface of the digital wax pattern below the height of contour, milling the hardened ceramic green body formed in the cavity mould to produce a dental all-ceramic restoration body with the same form as the digital wax pattern; or according to the outer surface form of the digital wax pattern, milling the hardened ceramic green body formed in the convex mould shaping cavity to produce the dental all-ceramic restoration body with the same form as the digital wax pattern; wherein preferably, a plurality of bodies of the dental all-ceramic restoration can be manufactured simultaneously on a single mould blank and a hardened ceramic green body according to steps to. step milling a mould blank to obtain a cavity mould having an inner surface corresponding to an outer surface form of the digital wax pattern, or a convex mould having an outer surface corresponding to an inner surface form of the digital wax pattern; step injecting a ceramic colloid into the cavity mould formed in step 1, wherein after being dried, a hardened ceramic green body with less than 10% liquid phase content is formed; or sealing the convex mould formed in step 1 with a matched sleeve and then injecting the ceramic colloid into a shaping cavity between the sleeve and the convex mould, wherein after being dried, a hardened ceramic green body with less than 10% liquid phase content is formed; step according to the inner surface form of the digital wax pattern, or the inner surface form combined with a partial outer surface of the digital wax pattern below the height of contour, milling the hardened ceramic green body formed in the cavity mould to produce a dental all-ceramic restoration body with the same form as the digital wax pattern; or according to the outer surface form of the digital wax pattern, milling the hardened ceramic green body formed in the convex mould shaping cavity to produce the dental all-ceramic restoration body with the same form as the digital wax pattern; wherein preferably, a plurality of bodies of the dental all-ceramic restoration can be manufactured simultaneously on a single mould blank and a hardened ceramic green body according to steps to.