The present invention aims to provide an autonomous moving robot capable of visibly showing the human an initial check result for a sound input means in the initial stage after the robot device is turned on and activated, and whether or not the input sound was normally recognized. The robot has ears 9a, 9b respectively comprising microphones 10a, 10b for external sound input, and LED displays 11a, 11b with a plurality of luminescent portions around the respective microphones. The luminescent portions of the LED displays 11a, 11b indicate the judgment of the initial check on whether or not the ears 9a, 9b (the microphones 10a, 10b and the LED displays 11a, 11b) are normally functioning when the robot is turned on and activated, by means of the lighting states of the displays.