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本文以生物制品为例介绍了利用抽样调查获取的断面数据，建立模糊线性回归模型，对具有复杂需求因素的产品市场需求进行了预测，得出了有重要价值的结论。所建立的需求预测模型，丰富了市场研究的理论与方法。
In this paper, the biological products are taken as an example to introduce the cross-sectional data obtained by sampling and to establish the fuzzy linear regression model. The market demand of products with complex demand factors is predicted, and the conclusion is of great value. The established demand forecasting model enriches the theories and methods of market research.