The invention relates to a four-roller tabletting device. The four-roller tabletting device comprises a rack, an upper supporting roller, a lower supporting roller, an upper rolling roller, a lower rolling roller, a roller distance adjusting assembly used for adjusting the distance between the upper rolling roller and the lower rolling roller, and a power assembly driving the upper supporting roller, the lower supporting roller, the upper rolling roller and the lower rolling roller to rotate, wherein the power assembly comprises a motor driving the upper supporting roller and the lower supporting roller to rotate correspondingly, the roller distance adjusting assembly comprises lead screws arranged on the two sides of the rack correspondingly, two sliding pieces matching with the two leadscrews correspondingly and a driving piece for driving the lead screws to rotate, the two ends of the upper supporting roller and the two ends of the upper rolling roller in the length direction are installed on the two sliding pieces correspondingly, the upper supporting roller is located over the upper rolling roller, the lower supporting roller is located under the lower rolling roller, the central axes of the upper supporting roller, the lower supporting roller, the upper rolling roller and the lower rolling roller are located on the same vertical plane, the diameters of the upper supporting roller, the lower supporting roller are consistent, and the diameters of the upper rolling roller and the lower rolling roller are consistent, the diameter of the upper supporting roller is largerthan that of a upper rolling pipe. The four-roller tabletting device has the effect of improving the accuracy of the rolling thickness of a metal sheet.