随着人们对 e DNA 的关注，越来越多的研究人员加入了这个行列，相关

As people pay more attention to e DNA, more and more researchers have joined the ranks, and related scientific issues, criticisms and innovations have begun to show up. This article comprehensively expounds the progress of e DNA application research in terms of e DNA definition, historical development, research methods and procedures, uses, existing problems and development prospects.

As people focus on e-DNA, more and more researchers join in, and scientific issues, criticism, and innovation begin to show up. This paper comprehensively expounds the progress of e DNA application research in terms of e DNA definition, historical development, research methods and steps, as well as use, problems and development prospects.

With people's attention to E-DNA, more and more researchers have joined the ranks, and relevant scientific problems, criticism and innovation have begun to show. In this paper, the definition of E-DNA, historical development, research methods and steps as well as the use, existing problems and development prospects of E-DNA are reviewed.