The paper introduces the knowledge circle and spire of product innovation, points out that RP& M can accelerate knowledge spire of product innovation, establishes the new model of knowledge spire of product innovation based on RP& M.

• 介绍了产品创新中的知识循环和知识螺旋,指出了运用快速成型技术可以加快产品创新中的知识螺旋,建立了基于快速成型技术的产品创新知识螺旋模型。