The present invention relates to a bioelectrode having excellent breathability and flexibility as well as excellent mechanical and chemical durability and, specifically, to a bioelectrode comprising: an elastic nanofiber mesh sheet including polymer nanofibers formed by electrospinning; a first metal nanowire network impregnated on the elastic nanofiber mesh sheet such that at least a portion thereof is exposed to the outside; and a corrugated layer formed by a second metal located on the first metal nanowire network exposed to the outside.
