With the continuous development of the market economy, the competition among enterprises is becoming more and more intense. New enterprises pay more and more attention to inventory management and try to establish a set of scientific and strict inventory management methods in order to reduce the waste of funds and control the inventory cost within the minimum, so as to increase the economic benefits of the enterprise. Company A belongs to the retail enterprise, which has high requirements in inventory management as well as funds. This paper adopts the relevant theories and methods of inventory management, and on this basis draws on the research results in inventory management at home and abroad, analyzes the current inventory management situation of Company A, analyzes the problems and reasons it faces, and improves it. On the basis of determining the optimal inventory management objectives, it puts forward the measures for Company A to carry out inventory management optimization: (1) ABC classification method, classifying the types of goods, determining the classification procedure of goods, and optimizing the inventory of various items; (2) perfecting the method of demand forecasting, optimizing the process of demand forecasting, and guaranteeing the implementation of demand forecasting; (3) optimizing the inventory order model, determining a reasonable safety inventory, improve the management mechanism of slow-moving products. The research of this thesis has certain reference value for the inventory management of Company A, and also provides certain reference for the inventory management of other enterprises.