Disclosed herein is a food roasting apparatus. The food roasting apparatus includes: a main body (100) which has a heating chamber housing (110) provided with a heating line (111); a rotating unit (200) which is provided in the heating chamber housing (110) to rotate food; a water tank (300) which is provided in the heating chamber housing and contains therein water; a falling substance guide (400) which is coupled to the water tank such that oil falling downwards from the food smoothly flows into the water tank; a steam control unit which induces evaporated moisture moving upwards through the falling substance guide to circulate in the heating chamber housing by means of convection; and a medicinal substance container (600) which is disposed adjacent to the steam control unit and contains a medicinal substance therein so that aroma of the medicinal substance permeates the food.