The invention discloses an edge node content auditing and filtering system and method, and belongs to the technical field of the Internet. The invention discloses an edge node content auditing and filtering system. The system comprises a data acquisition module, a data analysis module, a database, a data auditing module, a detection module, an updating module and an output module. The invention further comprises an edge node content auditing and filtering method which comprises the following specific steps: S1, acquiring data at the edge node for transmission and storage; S2, carrying out screening, and carrying out auditing and sorting; S3, carrying out sensitive feature auditing, carrying out outputting, and filtering or intercepting the request; S4, according to the historical data, carrying out health detection on the edge node network environment by utilizing a naive Bayesian model; and S5, adjusting the sensitive characteristics according to the detection result, and purifying the network environment. According to the invention, the auditing efficiency is improved, the resource waste is reduced, the system self-inspection can be carried out, and the user is ensured to have ahealthy network environment all the time.