Recent advances in computer hardware technology enable us to handle 3D multimedia data more easily and many 3D Computer Graphics (CG) contents have been created and stored for various application fields. In this situation, we need any 3D multimedia data search system that allows us to efficiently retrieve our required data. The authors have proposed a 3D multimedia data search system using stochastic Attributed Relational Graph (ARG) matching. However, there is a problem that stochastic ARG matching needs huge calculation cost. To reduce such a cost, the authors propose new matching algorithm, called stochastic Attributed Relational Tree (ART) matching because calculation cost of tree matching is less than that of graph matching. The authors applied stochastic ART matching method for 3D model search and obtained better performance rather than those of the conventional matching methods besides stochastic ARG matching method.