对非语言交际手段的研究和探讨 ,是图书馆界尚待开垦的新领域。馆员对自身行为语言符号的认知和使用 ,大多处在潜意识阶段 ,与读者的期望存在一定的差距 ,本文从读者的角度 ,分析了它们在图书馆的存在形式 ,以及对服务品质的影响。提出了“知其可为而为 ,知其不可为而不为”的几项主张。 Research and discussion on non-verbal communication means is a new area to be reclaimed in the library community. Librarians ’cognition and use of linguistic signs of their own behaviors are mostly in the subconscious stage, which is far from the expectation of the readers. This paper analyzes their existing forms in libraries and their impact on the service quality from the readers’ point of view . Put forward several ideas that “we should know what we can do but not know what we are doing”.