Abstract: The monitoring video of metro construction site is used as the source of training materials. The dangerous areas where near-miss events occur in the video are identified and divided. Moving targets are detected and workers′ tracks are identified according to the tracking algorithm. Based on video summarization extraction technology, the video key frames of on-site near-miss events are extracted, and then dynamic and static video summarizations are generated. Taking the near-miss case of falling at the foundation pit edge of a metro construction site in Wuhan, the dynamic video summarization is generated and the case material library of personalized training for construction workers is updated, solving the problems in conventional safety training such as simple and boring picture or comic materials and difficulty in acquisition.