To provide a Robot which voluntarily requests changes and evolves according to the contents of learning.

Detection study of specific information, such as taking in of a circumference picture or user sound, contact with user, are carried out by a camera or a sound sensor, a contact sensor which the robot had 20, and according to these contents of study, change to A 'animal cat dog type', B 'love type', C 'intellectual brains type', D 'normal type' form robot type object of start type S is determined. While notifying a robot management server of the contents of additional components and additional data (control program) needed for this model change, a notification demand to a user is carried out through a voice output part or a display part of the robot. If the user recognizes the robot's notification demand, corresponding additional data are read from a robot management server, and registrational transmission to the robot is carried out, and also, the additional components are sent to user's home by dispatch directions of the additional component by the management server concerned is attached to a start type S robot. By attaching the additional components that are sent to user's home through dispatch directions of the additional component by the management server concerned on the robot of start type S, changes to the above-mentioned determination robot type object are made.