摘要：敘述了電磁兼容的基本概念與特征；從對人體的危害，對電子、電氣設備的影響兩個方面，詳細介紹了電磁污染的來源及防護措施；指出了電磁兼容技術(shù)的國內(nèi)外現(xiàn)狀及其重要性，指明了它的發(fā)展方向。 敘詞：污染；危害；電磁兼容；防護措施；發(fā)展方向 Abstract：In this article, the basic concept and feature of EMC is described. From to the bane of the human body and the influence on electronics, electricity equipments two aspects, the sources and protection measures of electromagnetism pollution are introduced in detail. The domestic and international present condition and importance of EMC technique is pointed out. The developing direction of EMC techniques is indicated. Keyword：pollution; endanger; EMC; protection measures; developing direction