On the one hand, it interprets the abstract principle of category management with specific commodity carding, on the other hand, it summarizes the practice of commodity carding with category management methods, introduces cases in simple terms, and teaches you how to comb commodities with first-hand information. Summarize the classified categories, arrange them, pile them up, and use them as four combs for commodity discussion, which are vivid. This book has a guiding role in effective commodity combination, commodity structure adjustment and category management, and is suitable for supermarket operators, supermarket purchasers, category management enthusiasts and business school students to read, and can also be used as a training material for purchasing management. Pei Liang, Secretary-General of China Chain Store & Franchise Association, the author of this book justifies the complex category management technology system with such vivid words, and easily dissolves the daunting content into four simple and vivid actions: sorting out the categories, queuing up, returning to the good pile, and discussing the good generation, which is a good gift for front-line operators. Zhang Xiuxia, Associate Professor of National University of Defense Technology, Chief Expert of Tianmu Data Mining Research Center of China People's Liberation Army, Professor of Dalian Vocational and Technical College and Peng, Deputy Secretary General of China Chain Store & Franchise Association.