In response to the issue , the existing platform door control systems cannot identify multiple train door locations , particularly for railway train sets without Automatic Train Operation ( ATO) . Different train models operate mixedly at the same platform , so this paper proposes a railway platform door control system based on LiDAR technolo- gy. Firstly , the arrangement information of door locations in a multi-model railway environment is analyzed. Subse- quently , the train sets' corresponding position information and the stable stopping information are collected using Li- DAR technology , followed by the design of a LiDAR position tracking control unit. The platform door control system is then designed and eventually verified through experiments. The experimental results demonstrate that the system is safe and reliable. It can accurately identify the door positions of different high-speed train units and determine when the train comes to a complete stop. Its accuracy exceeds 98. 4% , providing both theoretical and practical foundations for the promotion and application of platform doors in subsequent railway stations.