A three-dimensional advertising device comprising: a frame configured to have a predetermined shape; a plurality of unit cells arranged on the frame in a form of an X-Y matrix so as to be supported by the frame; and a controller for controlling a power supply device in response to an external input signal to selectively supply electric power to selected ones of the unit cells such that the unit cells are selectively driven, wherein each of the unit cells comprises: a cell plate having a magnet disposed at a rear surface thereof, an upper end of the cell plate being hingedly coupled to the frame such that the cell plate is disposed vertically; and an electromagnet which is disposed on the opposite of the magnet of the cell plate while having a same polarity, the electromagnet being configured to turn the cell plate forwards by repulsive force when electric power is supplied to the electromagnet according to a signal from the controller, wherein the cell plate of each of the unit cells comprises: a main body, a front surface of which is colored with a dark color, an upper end of the main body being hingedly coupled to the frame; characterised in that the cell plate of each of the unit cells comprises a plurality of blades provided at a front surface of the main body so as to be disposed at a uniform interval in a vertical direction, the blades being installed so as to be inclined downwards in order to cover the front surface of the main body, a front surface of each of the blades being colored with a bright color. a frame configured to have a predetermined shape; a plurality of unit cells arranged on the frame in a form of an X-Y matrix so as to be supported by the frame; and a controller for controlling a power supply device in response to an external input signal to selectively supply electric power to selected ones of the unit cells such that the unit cells are selectively driven, wherein each of the unit cells comprises: a cell plate having a magnet disposed at a rear surface thereof, an upper end of the cell plate being hingedly coupled to the frame such that the cell plate is disposed vertically; and an electromagnet which is disposed on the opposite of the magnet of the cell plate while having a same polarity, the electromagnet being configured to turn the cell plate forwards by repulsive force when electric power is supplied to the electromagnet according to a signal from the controller, a cell plate having a magnet disposed at a rear surface thereof, an upper end of the cell plate being hingedly coupled to the frame such that the cell plate is disposed vertically; and an electromagnet which is disposed on the opposite of the magnet of the cell plate while having a same polarity, the electromagnet being configured to turn the cell plate forwards by repulsive force when electric power is supplied to the electromagnet according to a signal from the controller, wherein the cell plate of each of the unit cells comprises: a main body, a front surface of which is colored with a dark color, an upper end of the main body being hingedly coupled to the frame; characterised in that the cell plate of each of the unit cells comprises a plurality of blades provided at a front surface of the main body so as to be disposed at a uniform interval in a vertical direction, the blades being installed so as to be inclined downwards in order to cover the front surface of the main body, a front surface of each of the blades being colored with a bright color. a main body, a front surface of which is colored with a dark color, an upper end of the main body being hingedly coupled to the frame; characterised in that the cell plate of each of the unit cells comprises a plurality of blades provided at a front surface of the main body so as to be disposed at a uniform interval in a vertical direction, the blades being installed so as to be inclined downwards in order to cover the front surface of the main body, a front surface of each of the blades being colored with a bright color.