In recent years, with the continuous improvement of consumption level, the development of retail industry is more and more rapid, but it is also facing tremendous competition and challenges. In today's competitive development mode, retail industry should develop according to its own characteristics, reduce unnecessary inventory costs, find appropriate inventory management mode, so as to gain certain advantages in competition and improve the competitiveness and profitability of enterprises. This paper takes Darunfa Supermarket inventory management as the research object, adopts the research method of field investigation, analyses the current situation and existing problems of supermarket inventory management, and puts forward corresponding countermeasures through analysis. At the same time, it is hoped that it can be used for reference in the research of inventory management technology in highly competitive retail industry.