新的震级国家标准《地震震级的规定》（GB17740—2017）是一个国家强制性标准，已于2017年5月12日由国家质量监督检验检疫总局、国家标准化管理委员会发布。本文介绍了震级国家标准修订的必要性，以及新的震级国家标准的主要内容、技术要点和主要特点，以便于在实际工作中能更好地应用。
New magnitude national standard of《General Rulers for Earthquake Magnitude》 (GB17740-2017) is the state mandatory standard, it was released on May 12, 2017, by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of the People's Republic of China. This paper introduces the necessity of revising the national standard of magnitude, and the main contents, technical points and primary features of the new national standard of magnitude, so as it can be applied better in practice.
2018,39(1): 1-11 收稿日期：2018-01-10
DOI：10.3969/j.issn.1003-3246.2018.01.001
基金项目：中国地震局经常性项目：震级国家标准的修订、颁布（项目编号：16A43ZX014）
作者简介：刘瑞丰(1962-),男,研究员,主要从事数字地震资料处理分析、地震震级测定等研究工作
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