The invention provides a hydraulic driving automatic exchange workbench of a closed mechanical press. The hydraulic driving automatic exchange workbench comprises a base, wherein a steel rail is arranged on the base, and one or two exchange workbench bodies are arranged on the steel rail. Roller jacking devices are arranged at four corners of the exchange workbench bodies, a set of multi-stage hydraulic oil cylinder driving device is arranged between each exchange workbench body and the base, guide devices are arranged between the two sides of the exchange workbench bodies and the base, conical positioning devices are arranged between the middles of the two sides of the exchange workbench bodies and the base, clamping devices are arranged between the exchange workbench bodies and the base,position detection devices are arranged at the front and back of the exchange workbench bodies, steel rail cleaning devices are arranged on the front outer walls and the rear outer walls of the exchange workbench bodies, four sets of collision block automatic lifting devices are arranged in the middle of the base at intervals, the four corners of the base are provided with edge collision block devices, and a hydraulic pump station device is arranged in the base. The hydraulic driving automatic exchange workbench has the advantages of being accurate in guiding, precise in positioning, accuratein moving distance and the like.