PARKING ASSIST SYSTEM

A parking assist system includes: a self-driving vehicle that performs automatic driving from a getting-off area to a parking location in a parking area; an administrator device that transmits a guidance route to the parking location and a parking start instruction to the self-driving vehicle; and a mobile terminal device that communicates with the administrator device. The administrator device includes: a location information acquisition unit configured to acquire an object location indicative of a location of the self-driving vehicle or the mobile terminal device; a location determination unit configured to determine whether the object location is within a specified area; and a driving setting unit configured to: instruct the self-driving vehicle to start parking when the object location is within the specified area; and not to instruct the self-driving vehicle to start parking when the object location is not within the specified area.