A device for controlling an operation of an elevator by using a monitor, the device comprising: a monitor, which is installed on a wall surface of a cage of an elevator, a surface of a door of the elevator, or a wall surface of a building next to the door of the elevator, is adapted to display various buttons including a start button, an emergency button, and floor buttons controlling an operation of the elevator, and includes an embedded speaker; two pin cameras (P1 and P2) positioned at upper left and right sides of the monitor, respectively; and a controller, which is adapted to control operations of the various buttons of the monitor, an operation of the pin cameras (P1 and P2), and the operation of the elevator, said device being characterized in that the controller is adapted to control the two pin cameras (P1 and P2) next to a front surface of the monitor to photograph images, respectively, and sequentially is adapted to set two-dimensional virtual screens,, and at intervals parallel to the monitor based on photographing angles of the pin cameras (P1 and P2) in an overlapping photographed portion, in which virtual screen among virtual screens,, and is formed to be closest to the monitor, and screen is formed to be farthest from the monitor, and the controller is adapted to control the various buttons to be displayed on the monitor, and when an operator including a finger of a passenger touches virtual screens to in order of,, and, the controller is adapted to activate a selected button among the various buttons of the monitor and is adapted to control the operation of the elevator according to the activated button, and when the operator touches virtual screen, the controller is adapted to display a cursor having a basic size on the monitor and is adapted to determine whether the operator approaches toward virtual screen at a center position, and when it is determined that the operator approaches toward virtual screen, the controller is adapted to enlarge the size of the cursor. a monitor, which is installed on a wall surface of a cage of an elevator, a surface of a door of the elevator, or a wall surface of a building next to the door of the elevator, is adapted to display various buttons including a start button, an emergency button, and floor buttons controlling an operation of the elevator, and includes an embedded speaker; two pin cameras (P1 and P2) positioned at upper left and right sides of the monitor, respectively; and a controller, which is adapted to control operations of the various buttons of the monitor, an operation of the pin cameras (P1 and P2), and the operation of the elevator, said device being characterized in that the controller is adapted to control the two pin cameras (P1 and P2) next to a front surface of the monitor to photograph images, respectively, and sequentially is adapted to set two-dimensional virtual screens,, and at intervals parallel to the monitor based on photographing angles of the pin cameras (P1 and P2) in an overlapping photographed portion, in which virtual screen among virtual screens,, and is formed to be closest to the monitor, and screen is formed to be farthest from the monitor, and the controller is adapted to control the various buttons to be displayed on the monitor, and when an operator including a finger of a passenger touches virtual screens to in order of,, and, the controller is adapted to activate a selected button among the various buttons of the monitor and is adapted to control the operation of the elevator according to the activated button, and when the operator touches virtual screen, the controller is adapted to display a cursor having a basic size on the monitor and is adapted to determine whether the operator approaches toward virtual screen at a center position, and when it is determined that the operator approaches toward virtual screen, the controller is adapted to enlarge the size of the cursor.