PURPOSE: Purple sweet potato tart and a producing method thereof are provided to improve the flavor of the tar by using purple sweet potato and soybean sediments.CONSTITUTION: A producing method of purple sweet potato tart comprises the following steps: mixing flour, sugar, butter, margarine, trehalose, eggs, and water to obtain a tart sheet mixing steamed purple sweet potato and soybean sediments to obtain a filling and mounting the filling on a tart sheet, and baking. The contents of purple sweet potato and the soybean sediments are 50-250 parts by weight and 20-60 parts by weight, respectively for 100 parts of flour by weight.COPYRIGHT KIPO 2013본 발명은 자색 고구마 및 콩앙금을 이용한 타르트에 대한 것이다. 본 발명의 타르트는 풍미가 뛰어날 뿐 아니라 건강에도 좋은 장점이 있다.