The utility model relates to an equipment for a hydraulic jack to push out a caisson, including a jacking system, a pre-arranged rail, a trolley which is matched with the rail to bear the caisson, and a hydraulic push system which is connected with the trolley. The hydraulic push system includes a movable hydraulic station, two groups of hydraulic rail-clamping jacking push apparatus which is connected with the hydraulic station through a high-pressure fuel injection pipe and glides in uni-direction on the rail. The equipment has a compact structure, is nimble and flexible, has a self-system, and is easy to operate, the equipment does not interfere with other processes when being used; the equipment also has the advantages of beauty and practicality, less occupied area, cleanliness and hygiene, and high field utilization ratio; the dangerous source is reduced, the unsafe factor is eliminated, the equipment is safe and reliable; the physical labor is reduced, the working efficiency is increased; the cost is decreased; the failure is not easy to occur, and the maintenance time and the maintenance cost are reduced.