Screen display content leakage protection method

The invention relates to the technical field of information security, in particular to a screen display content leakage protection method, which comprises the following steps: acquiring parameters of a computer screen, calculating a capacity determination parameter to determine the content capacity of an invisible watermark, embedding the invisible watermark into the computer screen, performing signal processing on a plurality of screenshot files for a preset number of times, the integrity ratio of the invisible watermarks is calculated to determine whether the robustness of the invisible watermarks meets the standard, if not, the minimum embedding unit of the invisible watermarks is adjusted, otherwise, the invisible watermarks with the integrity meeting the standard are recognized, the recognition rate is calculated to secondarily determine whether the robustness of the invisible watermarks meets the standard, and if not, the minimum embedding unit of the invisible watermarks is adjusted. And calculating a