Driving method of display panel and display device

The invention discloses a driving method of a display panel and a display device.The driving method of the display panel comprises the steps that in the scanning stage, a grid control circuit of the display panel is controlled to output corresponding first grid driving signals to multiple rows of pixels of the display panel at the first refresh frequency, and the first refresh frequency is smaller than the target refresh frequency; in a blank stage, acquiring a first feedback signal from the gate control circuit; calculating a second refresh frequency according to a first refresh frequency corresponding to the first feedback signal and a preset frequency difference value; judging whether the second refresh frequency is greater than or equal to the target refresh frequency; and if the second refresh frequency is greater than or equal to the target refresh frequency, controlling the gate control circuit to output corresponding target gate drive signals to multiple rows of pixels of the display panel at the targ