Provided are a gate drive circuit and a driving method thereof, a display panel and a display device. The gate drive circuit includes a first sub-circuit group and a second sub-circuit group. The first sub-circuit group can drive the mth row to the first row of pixels of the N rows of pixels in the display panel row by row, and the second sub-circuit group can drive the (m+1)th row to the Nth row of pixels row by row. In addition, m is greater than 1 and less than N.