The present invention relates to an apparatus and method for assisting parking, the apparatus including: an image sensor photographing front/rear view images of a vehicle; and an estimated trace of vehicle generation and process unit generating an estimated trace of the vehicle to a parking target area using steering angle information of the vehicle, and overlaying the estimated trace of the vehicle to the photographed front/rear view images of the vehicle, wherein the estimated trace of the vehicle includes a first estimated trace of the vehicle based on a rear wheel of the vehicle and a second estimated trace of the vehicle based on a front wheel of the vehicle.