A transflective LCD having a dual common-electrode structure has a front substrate, a liquid crystal layer and a rear substrate. The front substrate has multiple first and second common electrodes respectively connected to a first and a second contact pads. The first and second contact pads are respectively connected to two voltage sources to obtain different voltage. The rear substrate has multiple pixels, each has a reflective region and a transmission region. The reflective region is aligned to the first common electrode and the transmission region is aligned to the second common electrode. Since the voltages to the first and second common electrodes are different, the voltages of two liquid crystal capacitors corresponding to the reflective and transmission regions are also different. Therefore, the V-T curves of one pixel are adjustable to be close to each other by supplying different voltages to the first and second common electrodes.