随着线上消费场景全面渗透日常，大量借用隐喻衍生出来的网络固定句式开始出现。“XX刺客”是近年极具代表性的认知隐喻类网络词汇构式。该构式以传统名词“刺客”为隐喻本体，将隐蔽、突然造成利益损失的各类商品、消费场景喻为“刺客”，形成“雪糕刺客”“水果刺客”“文具刺客”等系列衍生表达。本文以认知语言学的概念隐喻理论、语义泛化理论、构式语法理论为支撑，梳理“刺客”一词本源语义特征，剖析其从历史军事域向大众消费域的跨域隐喻映射机制，完整还原“XX刺客”构式的语义泛化路径，并从语言内部规律与社会外部环境双重角度阐释该构式广泛传播的动因，最后对网络隐喻构式的语言学价值、使用规范展开思考。研究发现，“XX刺客”属于典型实体概念隐喻，依托“消费损害=人身伤害”的底层认知逻辑完成语义跨域迁移；构式具备极强能产性，泛化过程遵循语言经济原则与类推机制，同时承载青年群体对消费乱象的批判情绪，是数字时代语言镜像社会心态的典型样本。

With the pervasive integration of online consumption scenarios into everyday life, a large number of fixed Internet sentence patterns derived from metaphors have emerged. "XX assassin" is a highly representative cognitive metaphorical Internet lexical construction in recent years. This construction takes the traditional noun "assassin" as the metaphorical source domain, conceptualizing various commodities and consumption scenarios that covertly and suddenly cause financial losses as "assassins," giving rise to a series of derivative expressions such as "ice cream assassin," "fruit assassin," and "stationery assassin." Grounded in conceptual metaphor theory, semantic generalization theory, and construction grammar theory from cognitive linguistics, this paper combs through the original semantic features of the word "assassin," analyzes its cross-domain metaphorical mapping mechanism from the historical military domain to the mass consumption domain, fully reconstructs the semantic generalization path of the "XX assassin" construction, and explains the driving forces behind its widespread dissemination from both internal linguistic rules and external social environmental perspectives. Finally, it reflects on the linguistic value and usage norms of Internet metaphorical constructions. The study finds that "XX assassin" is a typical entity-based conceptual metaphor, relying on the underlying cognitive logic of "consumption harm = physical harm" to complete semantic cross-domain migration. The construction exhibits strong productivity, with its generalization process following the economy principle of language and the mechanism of analogy, while simultaneously carrying young people's critical sentiments toward consumption disorders. It stands as a typical specimen of how language mirrors social mentality in the digital age.