Embodiments of this disclosure provide a gate driving circuit, a driving method thereof, a display panel and a display device. The gate driving circuit comprises: a corner cutting circuit and a scanning circuit. The corner cutting circuit is configured to output a corner cut voltage signal, wherein the corner cut voltage signal comprises a pulse whose edge is smoothed. The scanning circuit is configured to output a corner cut scanning signal based on the corner cut voltage signal, wherein the corner cut scanning signal comprises a pulse whose edge is smoothed.