The invention relates to the field of display technology, and particularly relates to a
shift register unit and a driving method, a gate
driving circuit as well as a
display device thereof. Through arranging a
voltage stabilizing
capacitor which is connected with a pull-up node, the
shift register unit provided by the embodiment of the invention stabilizes an
electric potential at the pull-up node by using the
voltage stabilizing
capacitor, so that signals output by the
shift register unit are more stable. Meanwhile, the shift register unit is composed of a small amount of transistors and capacitors, so that the wiring area of the gate
driving circuit is greatly reduced, and a
technical support is provided for designing a
liquid crystal display device with a narrower border; in addition, the structure of the gate
driving circuit is simplified, so that the
manufacturing technology of the gate driving circuit is simplified, and the manufacturing cost is reduced. Furthermore, the shift register unit provided by the invention also fast and effectively pulls down the output signals to be a low
electric potential through two pull-down processes; and the pull-down capacity of the gate driving circuit is strengthened.