题注与主送机关是公文格式的重要项目，而且二者的关系比较特殊，若处理不当便会影响公文格式的规范性。在归纳有关现行现定（包括有关较权威的解说）、实际做法及研究成果的基础上，本文试就如何处理这两个格式项目问题谈点看法一《中华人民共和国国家标准·国家机关公文格式? The caption and the main delivery organ are important items in the official document format, and the relationship between the two is rather special. If handled improperly, the standardization of the official document format will be affected. On the basis of summarizing the existing present (including the authoritative commentary), actual practice and research results, this paper tries to talk about how to deal with the two format project talk a "national standards of the People’s Republic of China official document format ?