The application relates to a method and
system for classifying and labeling confidential points of official documents, comprising the following steps: S1: obtaining definitions and standards of different confidential levels, and establishing a unified confidential level classification
system; S2: constructing a confidential point text
library, structurally arranging various sensitive information, and forming standardized keywords and sensitive information descriptions; S3: based on the official document confidential level classification
system and the confidential point text
library, a complete confidential point identification rule
library is constructed; S4: based on the confidential point identification rule library, the official document content is automatically scanned and identified to obtain an identification result; and S5: according to the identification result, a detailed keyword screening report is generated, and visual display is performed on an official document interface, the screening report lists all hit keyword information, including keyword content, a location, a corresponding confidential level, a matching rule and a matching mode. The application realizes intelligent detection and classification labeling of sensitive information of official documents, thereby improving the accuracy of confidential point management of official documents.