Provided is a display substrate. The display substrate includes a base substrate and a thin film transistor which is formed on the base substrate, wherein the thin film transistor includes a drain electrode, and at least one pad structure is arranged on an outer side of the drain electrode; a vertical distance between a top surface of the pad structure and the base substrate is less than the vertical distance between the top surface of the drain electrode and the base substrate, and is greater than the vertical distance between the top surface of the substrate, which is located on one side of the pad structure is far away from the drain electrode, and the base substrate. Further provided are a manufacturing method for the display substrate and a display device.