The invention provides a color film substrate, a display module, a display panel and a display device. The color film substrate comprises a display area and a first area, the first area is adjacent tothe display area, and the first area is used for display and camera shooting; the color film substrate further comprises a base, a plurality of color resistors arranged on the base, a color resistordistribution display area and a first area, and the adjacent color resistors are arranged at intervals; the color film substrate further comprises a light-transmitting switching structure, the light-transmitting switching structure is arranged on the base, the light-transmitting switching structure is located in the interval area between the adjacent color resistors in the first area, and the light-transmitting switching structure can transmit light when the first area is used for camera shooting and can shield light when the first area is not used for camera shooting. According to the color film substrate, when a camera arranged below a liquid crystal screen is used for shooting, external light can reach the camera normally through the light-transmitting switching structure, so that the external light transmittance of the camera arranged below the liquid crystal screen during shooting is improved, and the shooting effect of the camera arranged below the liquid crystal screen is further improved; and meanwhile, the camera is arranged below the liquid crystal screen, so that the comprehensive liquid crystal screen can be realized.