从近年来热议的电磁频谱战入手，分析了此概念群的来龙去脉，并深入解读和分析了联合电磁频谱作战、电磁作战环境、电磁战斗序列与传统电磁环境等概念及其相互关系；从《军语》定义出发，透视了电磁作战环境的电磁环境结构，刻画了其对**力量的电磁影响，揭示出电磁作战环境与复杂电磁环境具有情理之中的同构；通过案例也提醒人们电磁作战环境仍有意料之外的复杂性；最后，指出新老概念的辩证统一。

Focusing on the concepts of joint electromagnetic spectrum operations(JEMSO) proposed by U.S. DoD, the related electromagnetic operational environment(EMOE) is fullly analyzed from the viewpoints of JEMSO, complex electromagnetic environment(EME) and electromagnetic orders of battle(EOB); then the compositions of newly proposed EMOE are pointed out to be actually similar to the complex EME well known by us；finally, with case studies the weird complexity of EMOE effects is shown.