A vehicle management server for managing a shared vehicle used by a plurality of users in different time slots. The vehicle management server includes a processor and a memory connected to the processor. The processor is configured to perform: receiving use reservations for using the shared vehicle from the plurality of users; and making a use schedule of the shared vehicle. The memory is configured to perform: storing a correspondence between a plurality of containers provided in the shared vehicle and the plurality of users respectively using the plurality of containers. The processor is further configured to perform: outputting a control signal to command the shared vehicle to lock or unlock each of the plurality of containers provided in the shared vehicle based on the use schedule made in the making and the correspondence stored in the memory.