做好校对工作，既是每个校对工作者的责任，也是出版界提高图书质量，服务好读者的一项重要工作。本文着重探讨校对工作中校异同与校是非的联系与区别。 第一，校异同和校是非是紧密相联，不可分割的。 校对工作的功能或内容可概括为两大类，一是校异同，二是校是非。校异同和 Proofreading work is not only the responsibility of each proofing worker, but also an important task for the publishing industry to improve the quality of books and serve the readers well. This article focuses on the collation of differences and differences between proofreading school and school. First, the differences between school and school are closely linked and inseparable. The function or content of the proofreading work can be summarized into two categories, one is the similarities and differences, and the other is the school right and wrong. Similarities and differences with the school