To provide a method for improving image quality of transflective liquid crystal display device and to provide a pixel structure therefor.

The method for improving image quality of transflective liquid crystal display device and the pixel structure therefor is provided. Each sub-pixel region includes a transmission region and a reflection region. In the sub-pixel region, a data line, a first gate line, a second gate line and a common line control a driving voltage of a liquid crystal layer. The transmission region comprises a transmission electrode having a first charge storage capacitance and the reflection region comprises a reflection electrode having a second charge storage capacitance. The first and the second gate lines can be set into first and second control states, respectively. The ratio of the first charge storage capacitance to the second charge storage capacitance is adjusted by an adjustment storage condenser and can be controlled based on the control state of the gate line.