The utility model relates to a conventional combined harvester which enables the summit portion of the front end of each seedling-separating device not to be prone to contact with the field, keeps postures of guided growing crops neat, and can smoothly achieve harvesting. The conventional combined harvester comprises a left seedling-separating device, a right seedling-separating device, a seedling-pulling wheel arranged between the seedling-separating devices, a harvesting device, and a spiral conveying device which can convey the harvested crops to a rear feed device. Each seedling-separating device comprises a pair of partition boards opposite to each other on the left and the right sides, and a seedling-separating rod which is arranged on the inner side of each partition board and guides the growing crops to the harvesting width. Each partition board comprises the top portion of an upper and lower central portion of a front edge portion, and a declining edge portion declining from the top portion to the lower edge portion. The top portion protrudes forward. Each seedling-separating rod is arranged along the front and back direction, the front portion of each seedling-separating rod is fixed close to the top portion, and the rear end of each seedling-separating rod is arranged near the spiral conveying device.