In the tree-structure for the parameters-based remodeling, only vertical transfers were permitted and cross transfers were forbidden. So the tree-structure set an agile and credible parameter transfer channel for variant design, and provided the foundation for the modularization of the parameter transfer structure. 该结构规定参数只允许纵向传递,避免了参数之间的交叉传递,为复杂产品变型设计提供了有效的变型信息传递通道,并在此基础上实现了参数传递结构的模块化。