A display substrate and a display device are provided, the display substrate includes a base substrate and a circuit structure layer disposed on the base substrate, the circuit structure layer includes a pixel circuit, a scan drive circuit, a control drive circuit and a buffer drive circuit; the pixel circuit includes a node reset transistor, a writing transistor, a reset signal line connected to a control electrode of the node reset transistor, a scan signal line connected to a control electrode of the writing transistor, and a control signal line; reset signal lines of pixel circuits of first to K-th rows are electrically connected with the buffer drive circuit, reset signal lines of pixel circuits of (K+1)-th to N-th row are electrically connected with the scan drive circuit or the control drive circuit.