本文遵照国家有关文件的规定，结合中等化学教材和教学的实际，对修订义务教育初中、普通高中、中等师范、职业高中等教材使用量和单位的名称、符号和书写规则时，贯彻实施国家标准的做法作了介绍。文中就使用相对原子质量和相对分子质量、物质的量及溶液组成的标度、热化学方程式的表达等如何修订；质量百分比浓度、体积比浓度、ｐｐｍ浓度等的废除；Ｂ的质量分数、体积分数、化学计量数等的引入，以及阿伏加德罗常数、摩尔质量、摩尔体积、Ｂ的物质的量浓度等定义的修订或修订设想作了说明。 This article complies with the provisions of relevant national documents and combines with the practice of medium chemistry textbooks and teaching. It implements national standards when it revise the use of textbooks and the names, symbols and writing rules of compulsory education junior high school, ordinary high school, secondary normal education, and vocational high school textbooks. The practice was introduced. In this paper, the relative atomic mass and molecular weight, the amount of the substance and the scale of the solution composition, the expression of the thermochemical equation, etc. are used to modify; the mass percentage concentration, volumetric concentration, and ppm concentration are eliminated; the mass fraction and volume of B The introduction of fractions, stoichiometry, etc., and the revised or revised assumptions for the definitions of the Avogadro’s constant, molar mass, molar volume, and amount of substance B, are described.