GB/T 2 2461.1 - 2023 is the first part of a series of standards for vocabulary in surface chemical analysis. It focuses on general terms and specifications for spectroscopy terms, and comprehensively covers the basic vocabulary in the field of surface chemical analysis. The basic concepts at the atomic and molecular levels, as well as the professional terms involved in various spectroscopy such as photoelectron spectroscopy and Auger electron spectroscopy, are precisely defined and explained. Unify the meaning of terms, remove barriers to industry communication, build a common language platform for scientific research, teaching, testing and other work in the field of surface chemical analysis, and promote knowledge dissemination, technological innovation and international cooperation in this field.