A double-pass street code comprises a support and four wire clamping devices arranged on the support, wherein each wire clamping device comprises a supporting wheel, a first clamping plate and a second clamping plate, and a locking device, the outer side surface of the supporting wheel are in an inward concave column shape, the first clamping plate and the second clamping plate are oppositely arranged at two sides of the supporting wheel, the locking device is used for being connected with the first clamping plate and the second clamping plate, the inner side surface of the first clamping plate and the inner side surface of the second clamping plate are respectively matched with the outer side surface of the supporting wheel to form a first cavity and a second cavity fro enabling a cable to pass through; the cable can pass through both the first cavity and the second cavity, and the gap between the first clamping plate and the second clamping plate can be adjusted through the locking device to clamp the cable in the cavity. The two clamping plates and one supporting wheel are matched to clamp the cable in the formed cavity, the operation is simple and convenient, layout of the cable is flexible, steering arrangement of the cable is convenient, the outer skin of the cable is not damaged easily, the cable is firmly clamped and is not likely to fall, the safety is good, the structure is simple, the double-pass street code can be applied to cables of different diameters, and the universality is strong.