A display substrate and a display device are provided. The display substrate includes: plural gate lines each having at least one end provided with plural first electrostatic discharge (ESD) units configured to discharge static electricity in the gate lines. The plural first ESD units have curvatures different from each other. By discharging the static electricity through the plural ESD units, in case one of the ESD units is broken down by electrostatic current, the other ones can continue working.