A mobile robot according to an embodiment of the present disclosure may comprise a main body, a moving unit configured to move the main body, a communication unit configured to communicate with a second mobile robot that emits a signal, and a controller configured to recognize a position of the another mobile robot using the signal, control the moving unit to follow a trajectory corresponding to a movement of the another mobile robot based on the recognized position, and in response to the length of trajectory to be followed by the main body deviating from the predetermined range, output a control command to cause a moving speed of the main body or the second mobile robot to change.