The invention relates to a machine for repairing damaged signal lines of oil pipes. The machine includes a fixing device, a heating device, a moving device and an extrusion molding device, wherein the moving device includes: a slide rail, a slider, a slide table, a slide plate, a lead screw, a lead screw buckle, a first hand wheel, a fixed lock and a connection frame; the extrusion molding device includes: the second handwheel, plunger rod, plunger rod nut, mold, mold fixing device and door-shaped bracket; the heating device includes: upper shell, lower shell, hot-melt pipe, first The heating ring, the second heating ring, the mold base, the hot nozzle head and the hot nozzle bolt; the fixing device includes: a bottom plate, a support frame, a rod chain, a vertical tie rod, a connecting plate and a quick release device. After this kind of cable repair machine is used in conjunction with the temperature controller, it adopts two-stage temperature control heating, and can directly repair the damaged signal line on the oil pipe, so that it can continue to be put into use, thereby improving the utilization rate and efficiency of the signal line. Work efficiency, but also reduce the cost of signal line repair.