The effect of science popularization was analyzed by selecting “Challenge and Future” theme of the China Science and Technology Museum as object. First, the hierarchical structure model was established based on displayed content difference of exhibitions, and it also divided into target layer, zone layer of exhibition and exhibition layer; Second, orienting to exhibition of hierarchical structure model, utility function model of tourist residence time was built and analyzed according to utility function theory; Third, exhibition and its groups were researched about the effect of science popularization based on TFAHP.