The present invention provides an assembly equipment and an assembly method thereof. The assembly equipment is used for assembling a flexible screen with a curved backplane and includes a supporting part used for supporting and fixing the curved backplane and a holding part used for holding the flexible screen and assembling the flexible screen with the curved backplane in a fit manner. The assembly equipment is provided with the supporting part and the holding part to stably fix the curved backplane and assemble the flexible screen with the curved backplane in a fit manner quickly and accurately, thereby realizing high-efficiency assembly of the flexible screen and the curved backplane, and meanwhile realizing a high yield of display panels formed by assembling the flexible screen and the curved backplane.