A robot control system and a robot control method provide improved user convenience in operating the system. The robot control system includes a wireless IP sharing device, connected with the Internet, for transmitting and receiving an image signal and/or a control signal, a robot running by itself in accordance with a command received through the wireless IP sharing device, and performing a designated job, the robot being installed with a wireless communication module, a portable wireless terminal having a motion sensor, for wirelessly transmitting an operation command to the wireless communication module, or receiving image signal and/or control signal, and a robot server, connected with the Internet, for outputting a control screen of the robot, and the image signal and/or the control signal which is received from the robot, to the portable wireless terminal. The robot is controlled by use of the motion sensor installed at the portable wireless terminal.