The present disclosure provides a display panel and a manufacturing method thereof. The display panel includes an array substrate, a light-emitting layer, a first barrier layer, a color film layer, a planarization layer, and a second barrier layer. The array substrate includes a pixel definition layer, the pixel definition layer includes pixel definition regions and a retaining wall disposed between the pixel definition regions, the light-emitting layer is disposed in pixel definition regions, the first barrier layer covers the array substrate, the pixel definition layer, and the light-emitting layer, the first barrier layer includes grooves, the color film layer is disposed in the grooves, the planarization layer covers the first barrier layer and the color film layer, and the second barrier layer is disposed on the planarization layer. In the present disclosure, the first barrier layer is disposed on the light-emitting layer to improve performance of the display panel.