In view of the demand forecast diversity plays an important role in the business activities of enterprises and its influence factors, by combing and analyzing method, to predict the actual demand of enterprises and the process, system, management and so on, pointed out that improving demand forecasting system, improving demand forecasting management through optimizing the demand forecasting method, can be effective, deviation control demand forecasting and future market conditions, so as to continuously improve the accuracy of demand forecasting, promote the healthy operation of enterprise production, sales.