The invention relates to a self-supporting type rubber-insulated-wire cable jumper stripper with advantages of safe usage, convenient operation and high efficiency. The stripper comprises a stripper body including a stripper head and a handle. The stripper head includes a stripper head upper part, and a stripper head lower part that are a hinge joint. The stripper is characterized in that an upper module is fixedly arranged at the stripper head upper part; a lower module is fixedly arranged at the stripper head lower part; and the upper module and the lower module are opposite to each other. The upper module includes an upper module body; a first wire placing slot is formed in the lower surface of the upper module body; a cutting hole is formed in the upper surface of the upper module body and extends from the upper surface of the upper module body to the first wire placing slot; a blade is arranged inside the cutting hole; and the end portion of the blade passes through the cutting hole and extends into the first wire placing slot. Besides, a screw hole is formed in the right side surface of the upper module body and extends from the right side surface of the upper module body to the cutting hole; and a screw rod cooperating with the screw hole is arranged inside the screw hole.