新型冠状病毒肺炎(coronavirus disease 2019，COVID-19)患者的共感染备受临床关注。本文着重分析了现有研究中的不足，包括与共感染相关术语的定义及运用；病原学检测新技术的临床价值和适用范围的界定；诊断标准的确立及研究内容和方法等，并提出改进意见。

Coinfection among patients with coronavirus disease 2019(COVID-19)has been an important concern for COVID-19 clinically. This paper analysed obvious inadequacy of present research, including confusion in definition and usage of coinfection and relative terminology, absence of standards in clinical value and applicable category for novel etiologic detection techniques, and simplicity of content and methods in research. Hence some improvement opinions were suggested.