Plant endophytes are important components of plant micro-ecological system,and there is a rich diversity of endophyte resources.Combination of origins,concept of endophytes,diversity of endophytes,host plant diversity,the physiological function diversity,diversity of endophytes' detection methods,prospects were put forward in this paper.Plant endophytes are another microbial resource treasury needing exploitation,it has important significance for further research in agriculture,environmental protection,medi...