The invention belongs to the field of a cable bending apparatus, and specifically relates to a portable and quick detachment cable bending apparatus. According to the cable bending apparatus, a swingclamping sleeve in a limiting mechanism is adopted to clamp a cable, and the swing clamping sleeve can gradually swing along with the bending of the cable; in the process, relative movement is not formed between the swing clamping sleeve and the cable, so that friction is not generated, and damage to the cable sheath is avoided; in addition, the cable is clamped by the swing clamping sleeve, and the cable and the bending apparatus do not need to be held and fixed by a working staff in the cable bending process, so that convenience is brought to construction; and particularly the cable bendingapparatus is suitable for being used in high-altitude line stringing construction, the construction operation is greatly facilitated, the shortcoming of influence to construction quality, process andconstruction progress caused by lack of standardization of the manual bending operation can be eliminated, and the construction efficiency is improved.