ＣＡＤ技术在液压行业中的应用已经广泛涉及液压元件及系统设计计算、动静态性能仿真、原理图绘制等领域，但在系统管道布置方面尚属空白。该文对液压系统管道布置的一般性问题作了较详尽的探讨。结合液压系统的具体约束条件，给出了液压管道布置的规则因素环；并对基于规则的液压管道布置的几何实现方法作了较深入的分析。图４参８ The application of CAD technology in the hydraulic industry has been widely involved in hydraulic components and systems design and calculation, dynamic and static performance simulation, schematic drawing and other fields, but the system pipeline layout is still blank. This article made a more detailed discussion on the general problems of hydraulic system piping layout. Combined with the specific constraints of the hydraulic system, the rule factor ring of the hydraulic piping arrangement is given. The geometric realization of the hydraulic piping arrangement based on rules is analyzed in depth. Figure 4 Reference 8