世界范围的计量制度统一是人类文明发展的必然结果。米制的创立迈出了这种统一的第一步。自1875年“米制外交会议”参与国签署“米制公约”以来,传统的米制已发展形成了现代“米制”——国际单位制(SI)。尽管基本单位的定义和实现有了很大的变化,但质量单位千克(kg)一直沿用着100多年前的定义及其实物基准。本文将其继往开来的情况作一简介。 The unification of the measurement system in the world is the inevitable result of the development of human civilization. The establishment of the metric system took the first step toward this unification. Since 1875, the “Metric Diplomatic Conference” has signed “Metric Convention” by the participating countries, the traditional rice system has evolved into a modern “Metric System” (SI). Although the definition and implementation of the basic unit has changed a lot, the mass unit kg (kg) has been subject to the definition of more than 100 years ago and its physical basis. This article will make a brief introduction of its future.