A display panel and a manufacturing method thereof are provided. The display panel has a display side and a non-display side, and includes a display region and a bending region on a side edge of the display region, the bending region includes at least one first wire, the display region includes a second wire (102), a first end of the first wire is electrically connected to the second wire, and a second end of the first wire is bent to the non-display side. The bending region further includes a detection wire arranged side by side with the first wire, at least a part of the detection wire is bent along with the bending region, and the detection wire includes a first end and a second end; and the detection wire and the bending region are only located on a side of the side edge away from the display region.