PROBLEM TO BE SOLVED: To provide an assembling system and an assembling method of an animal cage in which the assembling of an animal cage can be performed as automatically as possible, the assembling workability is facilitated, and the assembling efficiency is improved. SOLUTION: Each constituent net of a bottom net 1, a top net 2, a front net 3, a rear net 4 and a side net 5 (A), 5 (B) is connected to each other by connecting required wire rods adjacent to each other by a connecting ring R. A system S for assembling an animal cage C forming a storage space for animals, which is a bottom net 1, a top net 2, a front net 3, a rear net 4, and side nets 5 (A) and 5 (B). An intermediate product assembling device Sa for assembling the intermediate product Wa in which each constituent net is foldably linked in advance, and a finished product assembling device Sb for assembling the finished product W of the animal cage C using the intermediate product Wa are provided. [Selection diagram] Fig. 1【課題】動物用ケージの組立をできるだけ自動的に行うことができるようにして、組立作業性を容易にし、組立効率の向上をを図った動物用ケージの組立システム及び組立方法を提供する。【解決手段】底面網１，上面網２，前面網３，後面網４及び側面網５（Ａ），５（Ｂ）の各構成網を互いに隣接する所要の線材を連結リングＲにより連結して動物が収容される収容空間を形成した動物用ケージＣを組立てるシステムＳであって、底面網１，上面網２，前面網３，後面網４及び側面網５（Ａ），５（Ｂ）の各構成網を予め折り畳み可能に連係させた中間品Ｗａを組立てる中間品組立装置Ｓａと、この中間品Ｗａを用いて動物用ケージＣの完成品Ｗを組立てる完成品組立装置Ｓｂとを備えた。【選択図】図１
