A connection device for a gap between a platform and a train is provided, A method and apparatus for connecting traffic safety equipment, include connecting plates, A link plate is mount on that fixedbase through an electric rotate shaft, the right end of the fixed base is fixedly mounted on the right side wall of the platform, An infrared emitter is arranged at the upper end of the fixed base, atrain door is arranged on the side wall of the train, an infrared receiving plate is arranged on the train door, a support plate is arranged at the right lower end of the connecting plate, a supportplate is arranged in the receiving and releasing bin, a slider is arranged at the lower end of the support plate, and a rail is arranged at the lower end of the receiving and releasing bin. By installing a connecting plate in the gap between the platform and the train, The connecting device solves the problem that the passenger boarding is inconvenient due to the existence of the gap between the platform and the train, and the structure is simple. The invention can make the pedestrian reach the train compartment through the connecting plate, and can automatically open the connecting plate without manual operation through the cooperation of the infrared emitter and the infrared receiving plate.