The present invention relates to a cable insulation skin special cutting tool, and to the field of the electric power appliance technology. The tool is composed of a sleeve body (6) and a cutting knife (2); a slideway (3) is arranged on the sleeve body (6), and is provided with a top head and the cutting knife (2); and the cutting knife (2) is provided with a connection rod (8) which is configured to connect the cutting knife (2) and the slideway (3), and the cutting knife (2) is provided with a push handle (1). The cable insulation leather special cutting tool is high in practicality and simple to install and use, and can rapidly and accurately cut and peel off the insulation skin so as to save the labor time and improve the labor efficiency.