The present disclosure provides an in-cell touch panel and a display device, wherein each self-capacitance electrode is provided with a transversal slit within a region of the self-capacitance electrode corresponding to a gap between two adjacent pixel units in a column direction, and/or each self-capacitance electrode is provided with a longitudinal slit within a region of the self-capacitance electrode corresponding to a gap between two adjacent pixel units in a row direction, so that it can ensure that the slits in the self-capacitance electrodes and the gaps between the self-capacitance electrodes are uniformly arranged in the whole in-cell touch panel, thereby overcoming the defects such as bright lines, dark lines or the like in the in-cell touch panel.