The invention provides a full-automatic optical patchcord encasing device. The full-automatic optical patchcord encasing device comprises a base, automatic subpackaging assemblies and automatic sealing assemblies; and a conveying belt is arranged in the length direction of the base, optical patchcords continuously move along the conveying belt, multiple automatic subpackaging assemblies are arranged at intervals in the direction of the conveying belt, one automatic sealing assembly is arranged on the side, corresponding to each automatic subpackaging assembly, of the conveying belt, and the optical patchcords which are subjected to subpackaging completely on each automatic subpackaging assembly can be automatically placed on the corresponding automatic sealing assembly. By means of the automatic subpackaging device, automatic subpackaging, automatic encasing and automatic integration of the optical patchcords are achieved, manpower is greatly saved, and the efficiency is improved. According to the automatic subpackaging device, by means of code scanning identifying, conveying of the conveying belt with a constant speed rate and mechanical claws capable of moving up and down, the optical patchcords with different types can be accurately subpackaged, and the mixed encasing problem is avoided. Pneumatic inner supporting type mechanical arms are used, the influence on performance of the optical patchcords during collisions is eliminated, and the product quality and yield are guaranteed.