“第三者”插足是直接破坏婚姻冲击家庭和危害社会的主要原因之一。本文针对“第三者”现象的存在.从“第三者”的含义、性质和社会危害性三方面进行了分析,并提出了对“第三者”应采取的对策。 “Third party ” to intervene is one of the main reasons that directly undermines the impact of marriage on the family and endangers the society. This article aims at the existence of the phenomenon of “third party”, analyzes the meaning, nature and social harmfulness of “third party ” and puts forward the countermeasures that should be taken for “third party ” .