To enable an owner to control the behavior of a robot as desired even in the robot not incorporating high-grade arithmetic function.

When a client swings his/her hand to a real robot 5, a CCD camera built in the robot 5 takes the state as image data. The image data is transmitted by radio to a client terminal 4, and transmitted to a server 2 through an internet 1. In the server 2, a client management part 21 specifies which client terminal the image data is sent from with reference to the member data base, and a behavior control information generating part 22 determines that the client requests the robot 5 to swing the hand by pattern recognition, and outputs the corresponding behavior control information. The behavior control information is sent to the robot 5 through the internet 1 and the client terminal 4, and the robot 5 conducts the operation of swinging the hand by function of the built-in behavior software and hardware.