针对当前公共卫生领域知识分散、多源异构造成的信息孤岛问题，探索国际化、规范化的术语语义映射机制，可为知识聚合提供新思路，进而支撑风险研判和应急决策。文章引入ISO 25964中心结构模型，以公共卫生领域传染病类知识组织系统CIDO、IDO、GenEpio为例，采用语义相似度和文本相似度计算相结合的方法，基于继承推理实现了术语之间的语义映射。实验表明，采用ISO 25964标准进行概念映射后，不仅等级关系增加72条，增幅达到13.43%，提高了知识的关联度，而且映射流程符合国际规范，有助于实现公共卫生领域知识共建共享，支持应急管理决策。

Focused on the current issues of scattered, multi-source and isomeric knowledge in the field of public health, the international and standardized semantic mapping mechanism of terminology was discussed to support knowledge aggregation and emergency decision-making. Taking the infectious disease knowledge organization system CIDO, IDO, and GenEpio in the public health field as examples, this paper presents the central structure model from ISO 25964 as the semantic mapping model of terminology. Combined the method of semantic similarity and text similarity calculation, the semantic similarity between terminologies based on inheritance reasoning was computed. The experiment indicated that the increased hierarchical relationships amount to 72 terms(13.43%), which not only improved the connectivity among multi knowledge systems, but also optimized the standard process of term mapping. It is an effective mechanism to public health knowledge construction and sharing in emergency management decision-making.