PARKING ASSISTANCE SYSTEM AND PARKING ASSISTANCE DEVICE

To provide a parking assist system and a parking assist device that are capable of sharing parking lot information on parking lots in which vehicles have parked before. A server storage portion (310) of a server device (3) stores parking lot information (122) that is acquired when a vehicle (V) is parked in a parking section of a parking lot. A parking assist controller (108) of a parking assist system (1) is configured to control the vehicle (V) to park itself in the parking section of the parking lot in accordance with the parking lot information (122) acquired from the server device (3).