Abstract: This paper studies the simultaneous analytical method of multicom-ponent mixtures using computer, chiefly discusses the influences of factors which affect the results of analysis, points out the quantitative relationship between these factors and analytical results. An experimentdiscriminant for estimating reliability is summed up. The programs forselecting optimum determinational points and their numbers are made up. This paper discusses the reliability, applicability and limitations of this method and points out its approaches for improvement.