To provide a vehicle rent management system that enables a user to securely rent a desired type of vehicle without visiting a distant place by taking very simple steps in a non-face-to-face fashion.

When a user terminal 10 transmits reservation information on vehicle rent with contents that a user desires to a vehicle rent management server 20, the vehicle rent management server 20 manages the reservation information and transmits the reservation information to a rental company terminal 30, and the vehicle rental company accepts a use reservation for vehicle rent, conveys a vehicle to a parking lot that the user desires afterward, and store a vehicle key 40 of the vehicle in a locker device 50, and the user unlocks a vehicle key storage part 57 of the locker device 50 using the locker key 60 to takes out the vehicle key 40 and uses a rental vehicle.