This paper constructs the state transition diagram of the retailer’s economic management risk control in the supply chain. At the same time, we construct the differential equation of the model. Based on the differential equation theory, we establish a dynamic equation model for product demand forecasting, which is suitable for the historical data of the retailer’s supply chain. At the same time, we use the two-party game model to determine the strategy choice of maximizing the income of a single enterprise in the secondary supply chain. The study finds that retailers can only maximize revenue through suboptimal order quantities when the financing limit has a substantially limiting effect.