Disclosed are a driving method of a display device and a driving device is described. The driving method of a display panel includes that in response to determining that the display device enters a low power consumption state, controlling a light intensity detection component to detect in real time whether the display device is in a strong light environment; in a case where the display device is in the strong light environment, controlling a driver chip to adjust a picture refresh frequency to a first frequency; in a case where the display device is not in the strong light environment, determining a current gray scale of the display device according to a latest user setting instruction, determining an optimal refresh frequency according to the current gray scale and a corresponding relationship between a preset gray scale and the optimal refresh frequency.