The clothing industry is a loose one. It faces competition in every market from international and local retailers, independent stores and department stores. Letsbuy is paying more attention to its internal operations and trying to make its products the favorites of local consumers. Letsbuy fashion year is divided into two seasons: spring, summer and autumn and winter. The purchasing activity is consistent with the market orientation and is continuously adjusted according to the data provided by sales stores all over the world, such as what sells well, climate differences and shopping preferences, so as to optimize the accuracy of fashion trends. The preparation time of commodities varies from 2~3 weeks to 6 months, which is mainly determined by the attributes of commodities. The right lead time is to balance price, time and quality.