The high-definition public security monitoring system is an important foundation for city safety and stability, an important part of the construction of a "safe city", and an important carrier of a "smart city". It can not only satisfy public security management, city management, traffic management, emergency command, etc It also plays an irreplaceable role in civil air defense and physical defense in preventing, detecting, controlling, and combating illegal crimes, providing clues for solving cases, and fixing evidence of illegal crimes. It also plays an irreplaceable role in civil air defense and physical defense. Public safety is of great significance.