A transfer-printing method of UV-digital stacked-thickness printing, which comprising following steps of: ink jetting a UV-ink on a carrier with low-adhesive-strength to the carrier to output a color-ink-layer with a mirrored-pattern and fully curing the color-ink-layer through UV-light-irradiation; ink jetting on the color-ink-layer to output a transparent-ink-layer with the same mirrored-pattern processed with gray-scale or binary-conversion, the transparent-ink-layer is divided into a plurality of regions, an inkjet-head ink jets back and forth within one region for multiple times and after ink jets the last time, cures the region through UV-light-irradiation with a low-irradiation-intensity, then the inkjet head moves forward to next region and ink jets back and forth within that region for multiple times; and pressing and transferring the transparent-ink-layer on the carrier onto a workpiece. The method can also be implemented on a foil-sleeking-pattern, such that the foil-surface of a metal-foil is transferred and presented on the workpiece.