The utility model discloses a power cable skinning knife, including the first pincers body and the second pincers body of cross arrangement, the first pincers body is connected to form by first pincers handle and first pincers seat an organic whole, and the second pincers body is connected to form by second pincers handle and second pincers seat an organic whole, and the first pincers body is articulated through the hinge pin that the cross section set up with the second pincers body one side spaced of first pincers seat rotates and is equipped with two sets of wheels with cable complex location support that are used for second pincers seat is gone up to rotate and is equipped with the circular rolling cutter who is used for being 3 centre gripping cables with the cooperation of two sets of location support wheel, the pivot of circular rolling cutter and location support wheel all with the hinge pin is parallel. The utility model discloses a power cable skinning knife is through surelygoing out radial notch and vertical incision on the cable, can relax, the work of skinning of swift completion cable, and its simple structure, convenient to use have effectively overcome the defectof the present cable technique of skinning, can be applicable to stripping of the outer insulating sheath of various power cable.