The invention provides a die roller for rotary die-cutting equipment. The die roller comprises a roller body, wherein a blade is arranged on the roller body; the roller body forms a layered structure sequentially consisting of a clad layer, a transition layer and a substrate from outside to inside by virtue of a laser cladding process; the clad layer forms the blade; the blade is connected with the substrate through the transition layer. The invention further provides a forming method for the blade of the die roller of the rotary die-cutting equipment. According to the die roller and the forming method, by the laser cladding process, different materials are metallurgically combined, the dilution rate is low, the hardness and the wear resistance of a material for a blade body and the toughness of a material for the substrate are maintained, and the blade is well combined with the substrate; the near-net shaping of the section of the blade body is realized, and the subsequent precision machining volume is reduced; a cladding trajectory can be digitally controlled, and any pre-designed complicated blade curve is easily formed.