The invention provides a quantum dot colored-film display panel and a manufacturing method thereof. The manufacturing method comprises the following steps of arranging a pixel electrode layer on a substrate; forming a light emitting layer on the pixel electrode layer; forming a public electrode layer on the light emitting layer; and forming a red quantum dot layer on a first public electrode area of the public electrode layer, forming a green quantum dot layer on a second public electrode area, and forming a metal shading layer on a fourth public electrode area. According to the display panel and the manufacturing method thereof provided by the invention, the metal shading layer is arranged on the public electrode layer, so that a shading effect is achieved, electrical conductivity of a light source under the colored film is also improved, and thus luminous flux of the light source is effectively improved, and image display with high quality is achieved.