The invention discloses a portable product information display device making use of solar energy. The portable product information display device comprises a shell, a solar cell panel, a storage battery, a voltage-stabilizing device, a controller, a signal receiver and a display, wherein the solar cell panel and the display are embedded in the outer surface of the shell; the storage battery, the voltage-stabilizing device, the controller and the signal receiver are arranged in the shell; the solar cell panel is connected to the storage battery and the controller by virtue of the voltage-stabilizing device; the storage battery is electrically connected to the controller, the signal receiver and the display; the storage battery is used for supplying power to the controller, the signal receiver and the display; and the controller is in signal connection to the signal receiver and the display. The display device disclosed by the invention, which takes the solar energy as an energy source, can display product information in real time, so that a platform is established for spreading the product information; therefore, a bridging effect is taken on product information flowing.