The application discloses a driving method and a driver circuit for a display panel, where the driving method includes the following steps: starting a source electrode driver circuit, outputting OV voltage, and simultaneously enabling a common line to output 0 V voltage or be disconnected; outputting, a preset initial voltage by the source electrode driver circuit, and simultaneously enabling the common line to output the identical initial voltage; after starting the source electrode driver circuit, transmitting a gray-scale voltage to the display panel; meanwhile, controlling a gamma circuit of the display panel to output a preset common voltage to the common line through a common voltage line.