Disclosed is a robot server including: a policy repository storing a collaboration policy model including a collaboration role of the robot and a command system configured of a simple command configured of a single command so as to perform the collaboration role and a composite command including at least one simple command; and a communication unit transmitting information on the collaboration role to be allocated to at least one robot and information on the simple command or the composite command to be allocated according to the collaboration role to the at least one robot.