The invention relates to a four-drive two-face chip polishing machine. The four-drive two-face chip polishing machine is formed by a lower polishing device and an upper polishing device; a pressure disc and an upper polishing disc are installed below an air cylinder of the upper polishing device through rotation connectors, and a linkage hole is machined in the middle of the pressure disc; a first transmission column is installed on an outer rotary disc of the lower polishing device, a lower polishing disc is installed on a lower tray, a second transmission column is installed on an inner rotary disc, and a connector is installed on a linkage shaft; and the first transmission column, the lower polishing disc, the second transmission column and the connector are driven by a first motor, a second motor, a third motor and a fourth motor correspondingly; the pressure disc is driven by the connector on the linkage shaft, a chip containing hole is machined in a chip positioning liner, the chip positioning liner is placed on the lower polishing disc, and side teeth of the chip positioning liner are combined with the first transmission column and the second transmission column in a clamped manner. By means of the technology, the first transmission column and the second transmission column drive the chip positioning liner to rotate between the upper polishing disc and the lower polishing disc in two directions, and chips are polished for the first time; and meanwhile, when the upper polishing disc and the lower polishing disc rotate, the chips are polished for the second time, work of polishing at the two times are overlapped, and therefore the polishing efficiency of the chips is increased in a multiplied manner.