To provide a map information display system for a moving body that can extract and display map information as required without updating set way points or routes. A limited region map information generating device for extracting map information for only a limited region based on a route being traveled and on a scheduled route, and for generating limited region map information includes a route generating device for generating a moving body route based on the route point coordinate information and road information, an extracting device for setting map information of a strip-shaped region extending along the moving body route as the limited region map information, and a strip-shaped region adjusting device for adjusting a size of the strip-shaped region so as to include the moving body route when it is determined that the information amount of the limited region map information is larger than a specified storage capacity but less than a storage capacity of the storage device.