在冶金、选矿、化工等生产和实验研究中常遇到曲线外推的问题。由于极限条件下的结果往往是一个十分重要的数据,为了获得比较准确的外推值,本文推荐一种依据L’Hospital 求极限法则为基础并用样条函数进行曲线外推的方法。笔者曾处理过大量 In metallurgy, mineral processing, chemical and other production and experimental studies often encounter the problem of curve extrapolation. Since the result under the limit condition is often a very important data, in order to obtain a more accurate extrapolation value, this paper proposes a method based on the limit rule of L’Hospital and using curve spline function extrapolation method. I have handled a lot