T-girder Launching Gantry is designed for T-girder erecting to satisfy the requirements of constructing new Passenger and Freight Mixed Railways and retransforming the old ones which is under the speed of 200km. The structure of the equipment has been optimized, adapted the sectional structure which makes the equipment suitable for road transportation. The equipment is applied to the latest electrical control and hydraulic technology to ensure the operation much more reliable and safe. The equipment can be used for the various kinds of T-type girder erection under 32m.