The invention relates to the technical field of electrical device processing, and concretely provides a universal shearing mold and a shearing method of a leading wire process connecting wire outside an electronic encapsulation case. An upper knife fixing plate and an upper mold frame are connected through screws; the upper mold frame is arranged on a mold handle; the upper knife fixing plate and an upper knife blade are connected through screws; a lower knife fixing seat and a lower mold frame are connected through screws; a lower knife blade and the lower knife fixing seat are connected through screws; the lower knife blade is positioned right under the upper knife blade. A case leading wire required to be cut away spans on the lower knife blade; one side required to perform leading wire cutting is attached to the lower knife blade; a punching machine switch is started; an upper mold descends; the cutting away of a row of leading wires is completed by the upper knife blade and the lower knife blade. The end surfaces at the cut part of the leading wire are enabled to be flat; the leading wire has no plating layer damage; the consistency of the length dimension of all leading wires of the single case and the length dimension of the leading wires of batch cases is guaranteed; the operation is convenient; the efficiency is high; the requirements of the cutting away of the leading wires of the cases with various different specifications can be met.