The invention relates to a train information monitoring method, device and equipment. The train information monitoring method has the following steps: acquiring vibration data and strain data monitored by a bridge sensing system when a train passes through a railroad bridge, wherein the vibration data is vibration data when all axles of the train pass through two adjacent vibration sensors in thebridge sensing system, and the strain data is strain data output by strain sensors in the bridge sensing system; determining the running direction of the train according to the vibration time of any axle passing through two adjacent vibration sensors in the vibration data; according to the structural parameters and the vibration data of the railroad bridge, carrying out vehicle speed calculation and wheelbase calculation to obtain the vehicle speed and the vehicle wheelbase of the train; and according to the structure parameters, the vehicle speed, the vibration data and the strain data, carrying out uniform load calculation to obtain the average load of the train. The train information monitoring cost is low, the method is not limited by the train running state, and the purpose of remarkably improving the train information monitoring reliability is achieved.