文章介绍了钱学森提出的现代科学技术体系和综合集成方法论。现代科学技术体系是横向上由11个科学技术部门、纵向上由三个层次，即基础理论、技术科学和应用技术所构成的矩阵式结构；综合集成方法论是由“从定性到定量综合集成方法”和“从定性到定量综合集成研讨厅体系”所构成。文章还讨论了它们在实践中的应用。

The paper introduces the contemporary system of science & technology and meta-synthesis established by Academician Qian Xuesen, The contemporary system of science and technology has a matrix structure which has eleven department of science and technology laterally and three hierarchies, i.e. fundamental theory, technical science and application technology longitudinally. The meta-synthetic is a methodology that consist of meta-synthetic engineering and hall for workshop of meta-synthetic engineering. The paper also discusses their applications in practice.