The invention discloses an organic light-emitting display panel, a display device and an organic light-emitting display mother board, and belongs to the technical field of display. The organic light-emitting display panel comprises a substrate, a metal wire, a first insulation layer and a conductive part, wherein a surface of one side, deviating from the substrate, of the metal wire is a metal wire upper surface, the material of the metal wire comprises first metal, the first insulation layer is arranged on the metal wire upper surface and comprises at least one hollow part, the hollow part penetrates through the first insulation layer in a thickness direction of the first insulation layer, a part of the metal wire upper surface is exposed, the conductive part and the hollow part are not overlapped in a direction perpendicular to the substrate, the conductive part is electrically connected with the metal wire, a work function of the material of the conductive part is G1, a work function of metal silver is G2, a work function of the first metal is G3, and G1>G2>G3. Compared with the prior art, the reliability of the organic light-emitting display panel can be improved.