Display substrate and display device

A display substrate, comprising a display region and a bezel region located on at least one side of the display region, wherein

• the display region and the bezel region each comprises at least one hole;
• the hole comprises a hole region and a partition region surrounding the hole region, the partition region is provided with a first partition structure surrounding the hole region;
• the first partition structure comprises a first partition layer surrounding the hole region and a first cover layer provided on the first partition layer, a partition groove surrounding the hole region is provided on the first partition layer, a partition hole surrounding the hole region is provided on the first cover layer, the partition hole is communicated with the partition groove;
• the first cover layer located at a periphery of the partition hole comprises a protrusion relative to a side wall of the partition groove, and the protrusion and the side wall of the partition groove form a recessed structure, and
• wherein the bezel region comprises a circuit region, a power supply line region and an edge region provided sequentially along a direction away from the display region, the power supply line region comprises the at least one hole;
• in a direction perpendicular to a base substrate, the power supply line region comprises at least one insulation layer disposed on the base substrate and a power supply line disposed on the at least one insulation layer;
• the first partition layer in the first partition structure covers an edge of the hole region of the power supply line on a side close to the hole region.