The paper introduces a whole reducer set designed in block structure containing four cylin-dar gear reducers, and analyses its structure features and emphasized points of design.

• 本文介绍了用四台圆柱齿轮减速器以积木式组合设计形成一个完整的减速器群体；并分析了该减速器的结构特点以及积木式组合设计时的注意事项.