A central information processing system for a service robot. The system includes a broker unit including a plurality of interfaces for analyzing an information request from a corresponding service robot, transforming a format of the requested information, and transmitting the transformed information to the service robot, a spatial information manager for hierarchically composing and storing spatial information according to a recognition/reasoning level, searching spatial information, and returning the searched spatial information, an object information manager for hierarchically composing and storing object information about objects according to a recognition/reasoning level, searching object information, 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.