Abstract: In order to response quickly to market demand and implement the response strategy with a kind of mathematical analysis tools to the apparel supply-chain management, suggestions are made as to how to characterize the apparel marketability through a system of numerical values, which will forms a complete set of theory for assess apparel maketability. Firstly, apparel character index (ACI), composed of primitive index and fashion index, describes clothes basic characters as structure and fashion. ACI is created by evaluating apparel characters which influence on future apparel marketability on different stages. Secondly, the popularity index (PI), computed from mapping ACI features to the marketability, is used to describe the product marketability. And with PI, market satisfaction, trend and life cycle are measured.