A display panel and a manufacturing method thereof are disclosed. The display panel includes a substrate, an active layer, and a first metal layer. The active layer is disposed on one side of the substrate and includes a plurality of driving active parts, and each driving active part includes a first conductive subsection and a second conductive subsection spaced apart from each other, and a channel subsection connected between the first conductive subsection and the second conductive subsection. The first metal layer is disposed on one side of the active layer away from the substrate and includes a plurality of driving gates. A size of the channel subsection in a first direction is less than a size of the driving gates in the first direction, and the first direction is a direction in which the first conductive subsection points to the second conductive subsection.