Disclosed are a dart game apparatus and a dart game system providing a lesson image according to exemplary embodiments of the present disclosure. The dart game apparatus includes: a dart target having a plurality of score areas; a sensing unit sensing hitting of a dart pin with respect to the dart target; a foot pressure information obtaining unit obtaining foot pressure information which is information on pressure applied by a foot of a dart game user when the dart game user throws the dart pin; a throwing guide information generation unit generating throwing guide information for the dart game user based on the foot pressure information; a lesson image generation unit generating a lesson image based on the throwing guide information; and a display area provided in a body structure of the dart game apparatus and outputting the generated lesson image.