黄土的微结构是在黄土物质沉积时及沉积后的成土作用过程中形成者.对它的研究,有助于解决黄土成因、黄土工程地质性质等有关的理论与生产问题.我们对陕西、甘肃、青海及新疆等四个省区的十二个黄土剖面不同时代的黄土微结构,在扫描电子显微镜下进行了观察与分析,本文是这次工作的报道. The microstructure of loess is formed during the loess material sedimentation and after the sedimentation of the soil forming process.The study of it can help solve the theory and production problems related to loess origin, loess engineering geology property, The loess microstructures of twelve loess sections of different ages in four provinces and regions of Gansu, Qinghai and Xinjiang provinces were observed and analyzed under a scanning electron microscope. This article is the report of this work.