Abstract: A mobile body management device enables cost-effective execution of work that requires a mobile body. It includes an acceptance unit to receive work information specifying the application, time, and location. A determination unit compares this information with mobile body management data, considering storage location and availability, to select a mobile body that meets the criteria for executing the work. A control information generation unit generates instructions to control the movement of the selected mobile body based on the work application. These instructions are then transmitted to a mobile body control device to oversee the movement of the mobile body during the work. Overall, this device efficiently manages and utilizes mobile bodies for various tasks while maintaining low costs.