The invention discloses a multi-
modal security fence method based on vector matching. The method comprises the following steps: acquiring to-be-audited information, loading a pre-training
model set, vectorizing the to-be-audited information, and generating to-be-audited vectors; the to-be-audited information comprises a live broadcast real-time
stream and a newly added media file; establishing connection with a violation vector
database set, wherein the violation vector
database set comprises vector features of various types of violation data; according to the violation vector
database set, obtaining the compliance similarity of the to-be-audited vector, and judging whether the to-be-audited information is safely broadcasted or not; the pre-training
model set is composed of a text vector model, a picture vector model and a tone vector model, and is used for generating vector information from various types of to-be-audited information. According to the technical scheme, the text, the picture, the audio and the video of the media asset can be detected, intercepted and modified in all directions, the
broadcasting safety is ensured, the content auditing efficiency is greatly improved, and the
broadcasting safety is ensured.