中文摘要：

使用肘功能方法决定商品的分类组的数字并且使用 K 工具算法分类技术商品，这篇论文构造商品结构的一个科学分类框架然后在中国的进口商品结构测量变化。首先，从 2000 ～ 2012，在中国的进口商品结构经历了结构的变化，这被发现。显著地增加的非农业的主要产品和高科技产品分享，而 low-medium-technology 产品和中等高科技的产品的份额衰退了。从 2000 ～ 2006，第二，中国的进口的全面技术水平从 2007 ～ 2012 衰退了，但是然后增加了。因此，中国政府应该在全部的进口增加高科技和额外高科技的产品的份额在生产工业充分利用外国先进技术并且阻止走入低端的进口商品结构刺激结构的转变。

英文摘要：

Using the elbow function method to determine the number of classification groups of goods and applying the K-means algorithm to classify technical goods, this paper constructs a scientific classification framework of commodity structure and then measures the changes in China ＂s import commodity structure. It is found, first, that from 2000 to 2012, the import commodity structure in China underwent structural change. Shares of non-agricultural primary products and high-technology products increased sigmficantly, whereas shares of low-medium-technology products and medium-high-technology products declined. Second, from 2000 to 2006, the overall technology level of China＇s imports declined, but then increased from 2007 to 2012. Therefore, the Chinese Government shouM increase the share of high-technology and extra- high-technology products in total imports to stimulate structural transformation in manufacturing industries to make full use of foreign advanced technology and to prevent stepping into a low-end import commodity structure.