The intelligent monitoring system for Zhengzhou Rail Transit Control and Protection Zone is the first subway monitoring project in China. The system utilizes video cloud technology and AI intelligent algorithms to continuously capture videos and images of roads above the subway line 24/7 by hanging high-definition cameras at the tower base station. It focuses on capturing large construction vehicles such as excavators, analyzing whether they pose a danger to subway operation, and pushing warning information to maintenance personnel. It has established a collaborative inspection mode of "intelligent inspection+human inspection", which solves the problems of insufficient inspection personnel and limited visibility, effectively ensuring the safety of subway lines and citizens' travel safety.