GJXH butterfly fiber cable (leather cable) structure is the small bending radius of single-mode fiber and two symmetrical reinforcement integrated in the flame retardant sheath, the reinforcement can be steel wire, sheath material is low smoke halogen-free fuel (LSZH), sheath color can be white, black or other colors required by the user. The easily torn sheath structure and small allowable bending radius make installation and construction of the cable very convenient. The optical cable can use G.657 optical fiber, the optical fiber has excellent bending performance, the minimum bending radius can be up to 15mm, especially suitable for indoor wiring needs to turn the radius of small occasions, such as corner, indoor panel, etc.