Display substrate and display device

The utility model provides a display substrate and a display device, and belongs to the technical field of display. The display substrate comprises a plurality of sub-pixels and a plurality of data lines, the sub-pixels are electrically connected with the data lines, and the data lines are configured to provide data signals for the sub-pixels; the plurality of data leads are located in the frame area, the plurality of data leads are connected with the plurality of data lines, and the plurality of data leads comprise a plurality of fan-out wires located in the fan-out area, a plurality of switching wires located in the bending area, and a plurality of transition wires located in the transition area and extending to the chip setting area; the plurality of switching wires are connected with the plurality of fan-out wires and the plurality of transition wires; the plurality of connection bonding pads are located in the chip setting area, each connection bonding pad comprises a plurality of connection bonding pad metal layers which are electrically connected with one another, and one connection bonding pad metal layer of the plurality of connection bonding pad metal layers is electrically connected with one of the plurality of transition wires; wherein each transition wire in the plurality of transition wires is an integrated structure wire located on the same layer.