介绍了国内工业射线检测所使用的线型像质计标识的使用现状，阐述了各个行业检测标准的具体要求和现行像质计标准中的一些需要注意的问题，以帮助从业人员更清晰地认识线型像质计的规范标识。

This paper describes current domestic situation in using the linear image quality indicator marking in the industrial radiographic testing, and elaborates some requirements for testing standards by industry branches and some attentions needed to be paid to the current image quality indicator standards. The author hopes that the above-mentioned points could help the practitioners to have a clear understanding of the standard marking of linear image quality indicator.