A display substrate and a display device are provided. The display substrate includes: a base substrate; a first insulating layer arranged on the base substrate, at least one wire containing groove being provided on the first insulating layer; and at least one signal line, at least one of the signal lines being arranged in the wire containing groove, and one wire containing groove being configured to contain one signal line; and a second insulating layer, covering the first insulating layer and the signal line. The display device comprises the display substrate provided by the technical solution described above.