Disclosed in the utility model is a straightening tool for the network cable. The straightening tool comprises an upper jaw unit, a lower jaw unit, toothed hooks, a knife groove, a spring, a finger hole, a blade, and a leakage hook hole. The lower jaw unit is connected with the upper jaw unit; the toothed hooks are connected with the upper jaw unit; and the knife groove is connected with the upper jaw unit. The spring is connected with the lower jaw unit; the finger hole is connected with the upper jaw unit; the blade is connected with the lower jaw unit; and leakage hole hook is connected with the lower jaw unit. According to the straightening tool, because the blade is arranged at the lower jaw unit, the cable can extend into the lower jaw unit and rotatable scratching and peeling are carried out during rubber sheath peeling. Four toothed hooks are arranged at the upper jaw unit and each hook is used for respectively hooking each two wire cores that are screwed together after the rubber sheath is peeled for straightening; and after the wire cores are straightened, the blade is used for cut off the rest of wire cores. And the finger hole has the available space and thus the middle finger can be placed into the available space to carry out straightening motion, thereby improving the work efficiency. Moreover, the provided tool has advantages of reasonable distribution of all components, simple operation, light quality, portability, secure and reliable usage, and high work efficiency.