The invention discloses a production process of a PVC electrical adhesive tape, belongs to the technical field of adhesive tape processing, and is designed to solve the problems that a conventional electrical adhesive tape processing method is low in working efficiency and not environmentally friendly. The production process of the PVC electrical adhesive tape provided by the invention comprises the following steps: a PVC base material is extruded by a twin-screw extruder and then is subjected to flow casting processing to form a PVC base film; a pressure-sensitive adhesive extruded by the twin-screw extruder is subjected to flow casting processing again on the PVC base film to form an adhesive PVC film. The production process of the PVC electrical adhesive tape provided by the invention can improve the processing efficiency, reduce the production costs, realize energy saving and environmental protection, and can prevent the pressure-sensitive adhesive from aging.