The invention discloses a straight-cylinder-type automatic oil pressing production system. The straight-cylinder-type automatic oil pressing production system is provided with seven positions, namely, the left discharging position, the left pre-pressing lifting position, the left feeding position, the main pressing position, the right feeding position, the right pre-pressing lifting position and the right discharging position. Because a PLC is used for controlling operation of materials and two pressing cylinders on a guide rail are used in cooperation with each other for carrying out pressing, the oil pressing cycle is shortened, oil pressing energy consumption is reduced, and production efficiency and the equipment utilization ratio are greatly improved.