1. A central information processing system for a service robot, which communicates with at least one of mobile service robots in an indoor, comprising: a broker unit including at least one of interfaces corresponding to the service robots where each of the interfaces analyzes an information request from a corresponding service robot, transforms a format of the requested information to a format analyzable by the corresponding service robot, and transmits the transformed information to the service robot; a spatial information manager for hierarchically composing and storing spatial information for the indoor according to a recognition/reasoning level, searching spatial information requested by a spatial information request of the broker unit, and returning the searched spatial information; an object information manager for hierarchically composing and storing object information about objects in the indoor according to a recognition/reasoning level, searching object information requested by an object information request of the broker unit, and returning the searched object information; and a space and object reasoning unit for searching and reasoning upper layer information about the object or space using lower layer information obtained from real environment or object, or searching and reasoning lower layer information to be used for comprehension of the object or space from upper layer information.