An L4 autonomous security patrol vehicle capable of fully autonomous cruising and obstacle avoidance with redundant safety protection. It integrates mobile surveillance and intelligent dispatching, and can be equipped with facial recognition, license plate recognition, one-button alarm, panoramic monitoring, and evidence collection for violations. It enables 24/7 uninterrupted patrols, significantly reduces manpower requirements, lowers security operation costs, greatly improves patrol efficiency and police visibility, and enhances the city's high-tech image. Applicable to major events and temporary area deployments, crowd gathering control/dispersal, routine community patrols, remote coordinated command, and other scenarios.