The invention discloses an organic light-emitting display panel and a display apparatus. The organic light-emitting display panel comprises a display area and a non-display area, wherein the display area comprises a substrate, a
driving circuit layer and an light-emitting device layer disposed on the
driving circuit layer; and the non-display area comprises a
retaining wall arranged to encircle the display area, the
retaining wall comprises at least one support layer, a
barrier layer disposed on the support layer and multiple projections formed on the
barrier layer, and the multiple projections are successively arranged along a direction away from the display area. The organic light-emitting display panel further comprises a packaging layer which covers the display area and the surfaces of a part of the projections. According to the invention, through designing the multiple projections at the top end of the
retaining wall, the edge of the packaging layer can be sealed only by use of one retaining wall, the frame width of the display panel is reduced, the multiple projections generate deformation to make up for slits when being extruded by a
mask, through the multiple projections,
diffusion paths of reaction gas during deposition are also increased,
diffusion can be ended in the multiple projections, and a
shadow effect is eliminated.