Disclosed is a position-recognizing system of a self-moving robot. A position-recognizing system of a self-moving robot includes: a floor in which a magnet is inserted; and a self-moving robot provided with a magnetic sensor that can sense the magnet while the robot is moving on the floor.According to this, a magnet mounted in a floor is sensed through the magnetic sensor, and thusly a current location of the self-moving robot can be accurately recognized, so that the self-moving robot can be precisely controlled.