High-tech industries such as information technology, big data and artificial intelligence have developed rapidly. New retail has gradually developed from the dual channel mode of mutual independence and competition between online and offline to the multi-channel mode of mutual resource sharing, coordination and cooperation and mutual drainage. And this model has become the current trend of China’s business model development. When online and offline pre-sale strategies are jointly adopted, this paper aims at maximizing the profits of enterprises, introduces consumer functions, solves multi-channel pre-sale strategies, obtains profit maximizing pre-sale discounts and sales prices. Through examples, it is proved that in the stage of production and pre-sale, the profit of new retail enterprises can be increased to a large extent by assisting new retail enterprises in controlling discounts, pricing and inventory through pre-sale discount strategies.