The invention relates to a heavy-load forging and pressing equipment hydraulic system with controllable feeding speed, and a control method. The heavy-load forging and pressing equipment hydraulic system comprises a sliding block, a displacement sensor, a double-acting fast feeding cylinder, a fast feeding hydraulic oil way, a single-acting working-feeding cylinder, a working-feeding hydraulic oil way, a human-computer interface and an industrial personal computer. The fast feeding hydraulic oil way and the working-feeding hydraulic oil way each comprise an oil source, a one-way cartridge valve set, a direction control cartridge valve set, a servo proportional valve, a pressure cartridge valve set, an oil pressure sensor and an energy accumulator. The working-feeding hydraulic oil way further comprises a liquid charging valve set. The industrial personal computer is connected with the human-computer interface, the one-way cartridge valve set, the pressure cartridge valve set, the oil pressure sensor, the direction control cartridge valve set, the servo proportional valve, the liquid charging valve set and the displacement sensor. According to the heavy-load forging and pressing equipment hydraulic system with the controllable feeding speed, and the control method, production efficiency is improved, the needs for flow are relatively small, machining requirements of various forge pieces with large sizes and complex shape sizes can be met, energy is saved, efficiency is improved, and high precision of motion of forging and pressing equipment is ensured.