The invention discloses a color film substrate and a display device. The color film substrate comprises a substrate base plate, a black matrix and a common electrode, wherein the common electrode is arranged on one side, away from the substrate base plate, of the black matrix which is formed on the substrate base plate. At least one first metal wire is arranged in a shading area, corresponding to the black matrix, in a display area of the color film substrate and is connected with a common voltage input end, and a plurality of points on each first metal wire are electrically connected with the common electrode. After the color film substrate and an array substrate are connected through a golden ball doped frame seal adhesive, a common electrode wire of the array substrate can be communicated with the first metal wires on the color film substrate by golden balls, voltages in different areas of the common electrode of the color film substrate can be transmitted and inputted by the at least one first metal wires, and accordingly voltage uniformity of the common electrode of the color film substrate is guaranteed, and defects of flickering, crosstalk, nonuniformity and the like of frames displayed by a display panel are overcome.