The invention discloses a transverse punching die for a refrigerator door liner, which comprises an upper moulding board and a lower moulding board which are matched mutually to fix the refrigerator door liner. A punching mechanism is arranged on the upper moulding board, and the punching mechanism consists of a press plate arranged on the upper part of the upper moulding board and a plurality ofpunching units connected with the press plate. Each punching unit comprises a sliding chute block, a slide block, a connecting slide block, a press plate and a connecting rod, wherein the sliding chute block is fixed on the bottom of the upper moulding board; the slide block is slidingly arranged on the sliding chute block and is provided with a punching pin; and the connecting rod can transfer the lengthwise movement of the press plate into the transverse movement of the slide block. Because of adopting the design of the slide block and the connecting rod, the punching die has the advantagesof simple integral structure, fewer parts and components, low manufacture and maintenance cost, and convenient assembly and operation in use, can reduce work hours and workload of workers and can improve the production efficiency.