The invention discloses a cable straightening device with a stripping function, which relates to the field of cable processing. The cable straightening device with the stripping function comprises a base, wherein a slide block is slidably connected to the base, one side of the slide block is provided with a first clamping device for clamping cables, the other side of the slide block is fixedly connected with a second clamping device, one side of the slide block is provided with a rack, a rotating shaft perpendicular to the rack is rotatably connected to the base, a gear coaxial with the rotating shaft is fixedly connected to the rotating shaft at a position corresponding to the rack, a starting device for starting the second clamping device is arranged on the base, two ends of the slide block are provided with a convex block, two clamping blocks are arranged between the convex blocks, one side of the clamping block far away from the convex block is fixedly connected with a blade used for cutting an outer wrapper of the cable, the convex blocks are all provided with an adjusting screw rod in a penetrating manner, the adjusting screw rod is in threaded connection with the convex block, one end of the adjusting screw rod urges the clamping block, a first spring is arranged between the convex block and the clamping block, one end of the first spring is connected with the convex block, and the other end of the first spring is connected with the clamping block; and the cable straightening device has a stripping function.