Display substrate and display device

The utility model discloses a display substrate and a display device. The display substrate comprises a substrate, a first conductive layer and an anode conductive layer which are arranged in sequence. The first conductive layer comprises a plurality of first signal transmission lines extending along a first direction, a plurality of first connecting lines extending along a second direction and a plurality of first connecting blocks, and the first direction and the second direction are crossed; the first connecting block is connected with the first signal transmission line through a first connecting line; the anode conducting layer comprises a plurality of first overlapped anodes and a plurality of first isolated anodes, the orthographic projection of the first signal transmission line and the orthographic projection of the first anodes on the substrate are overlapped, and the orthographic projection of the first connecting line and the orthographic projection of the first overlapped anodes on the substrate are overlapped; a first dummy line extending in the second direction is arranged on the side, close to the substrate, of the anode conducting layer, the orthographic projection of the first end of the first dummy line on the substrate falls on the orthographic projection of the first signal transmission line, and the orthographic projection of the first end of the first dummy line on the substrate and the orthographic projection of the first isolated anode are at least partially overlapped.