Provided are a display panel, a compensation method thereof and a display device. The display panel includes an organic light-emitting element array, a pixel circuit and a detection circuit; the organic light-emitting element array includes multiple organic light-emitting element groups, and ith organic light-emitting element rows in each organic light-emitting element groups are adjacently arranged; a peripheral circuit region includes a pixel driving circuit, a detection driving circuit, and an integrated driving circuit; in a detection phase, the detection driving circuit provides an enabling signal to the detection circuit; the integrated driving circuit provides a detection signal for the detection circuit, and sequentially detects multiple organic light-emitting element groups in a same organic light-emitting element row; in a display phase, the integrated driving circuit provides the compensation signal to the pixel circuit according to the compensation signal.