There is provided a detection panel, including: a substrate, gate lines, signal detection lines and pixels, a thin film transistor and an optical sensor are arranged in each pixel, the thin film transistor has a gate coupled with the corresponding gate line, a first electrode coupled with the corresponding signal detection line, and a second electrode coupled with a third electrode of the optical sensor in the same pixel; the pixels include at least one detecting pixel and at least one marking pixel, a first bias voltage line and a second bias voltage line are arranged on a side of the optical sensor away from the substrate, a fourth electrode of the optical sensor in the detecting pixel is coupled with the corresponding first bias voltage line, and the second electrode of the thin film transistor in the marking pixel is coupled with the corresponding second bias voltage line.