The purpose of the present invention is to provide a technique which enables suppressing contamination with other metals when using processing blades to process multiple types of electric cables having different core materials. This electric cable processing device performs processing by placing a blade against an electric cable. The electric cable processing device is provided with multiple processing blade units, and a shift mechanism which shifts the processing blade units so as to be selectively placed in a processing position. The electric cable processing device is further optionally provided with partitions disposed between the multiple processing blade units to avoid the ingress of scattered cutting chips.