易逝性高科技产品的更新过程是消费者对其产品性能不断认识和学习的过程。本文从消费者角度出发，提出影响易逝性高科技产品新老产品更新过程的主要因素是新老产品价格、产品学习程度以及消费者的性能偏好。本文以消费者剩余价值最大化为着眼点，运用效用函数并结合相关理论成果，对易逝性高科技产品的更新过程进行了分析和讨论。    

The renewing of Perishable Hi-Tech Product(PHTP) is a period that consumers study from PHTP. The renewing along with the function of the consumption surplus value is studied and the model of consumer selection is given, the renewing between the new product and the old product is analyzed. . 14 Refs In Chinese