本文提出学科体系框架“三分法”构想代表模式新说,并与其原四种形式作比较。详列了梁滨久“三分法”构想及其较低分支学科划分思路。从“三”的概念的趣味性、该模式接近学术界各路方家想法及其科学理论依据等方面作了分析。得出该模式的典型性、具有科学的理论基础和业内的群众基础,以及笔者倾向于梁滨久构想思路的结论。 This paper proposes a new theory about the representative model of the “trichotomy” of the academic system framework and compares it with the original four forms. A detailed account of Liang Bin long “trichotomy” concept and its division of ideas of the lower branch. From the interestingness of the concept of “three”, this model has been analyzed in the aspects of approaching the ideas of all the parties in academia and their scientific theories. Draw the model of the typical, with a scientific foundation of the theory and the industry’s mass base, as well as the author tends to Liang Bin long thought of the idea.