Because the current methods to classify products fail to reflect the differences in consumers' demands for product categories and can not guide the marketing practice well enough.A brand-new concept-category personality-is therefore,put forward.The present research,by way of a logical analysis of the elements influencing the formation of category personality and of category personality's role of exercising an impact on brand-name's personality and their dissemination so as to put forth a structural model to be used to explain the formation of category personality and the category's functioning mechanism..Our research indicates that such 3 factors as the type of consumer need,products' physical form and products' life cycle will influence the formation of category personality,which can be described on the dimension of brand-names' personality category.In this process the choice of category personality,brand-names' personality and the designing of the dissemination of the brand-names play a guiding role.