置信区间判定算法在利用元素指标判定肾炎病人的应用。本文件仅提供算法原理和部分C语言编写的数据处理程序，希望能对数学算法应用的研究者提供帮助。本算法获得SUT数学建模大赛一等奖。-Confidence interval decision algorithm in the use of elements of indicators to determine the application of nephritis patients. This document provides only part of the C algorithm principle and the data processing program written in the hope of the researchers on the application of mathematical algorithms to help. Mathematical modeling of this algorithm to obtain SUT contest first prize.