Combining the homogeneous matrix transformation theory of space mechanism and computer graphics , we raise the general principle and motion simulation ' s method of complicated mechanism , which is represented by spacial multipole structure of open chain 通过将空间机构学齐次矩阵变换原理和计算机图形学原理相结合,提出了以空间多杆开式链机构为代表的复杂机械系统运动三维图形仿真的一般原理和方法。