The invention discloses a passenger car colorful electronic advertisement putting system. The system comprises a rear top, a top cover framework, a decoration plate and a rear platform floor, whereinthe rear top, the decoration plate and the rear platform floor are fixed to the top cover framework, and the decoration plate is located on the front side of the top cover framework. The system also comprises a rear top maintenance cover, rear baffle glass, a rear clearance lamp, a rear guideboard and a colorful display screen, wherein the rear top maintenance cover is hinged to the decoration plate, the guideboard and the colorful display screen are fixed in the top cover framework in the up-down direction, and the guideboard and the colorful display screen are arranged on the front side of the top cover framework; the rear baffle glass is fixed to the front side of the top cover framework, and the rear baffle glass is used for sealing the rear guideboard and the colorful display screen;the rear clearance lamp is arranged on one side of the rear guideboard. According to the system, the structure of a passenger car is not changed, and the manufacturing difficulty is not improved; considerable advertisement income can be achieved through advertising position renting, the car purchasing requirement of a car purchasing organization is met, and the market competitiveness of passengercar products is improved.