The invention relates to purple sweet potato flaky pastry and a making method thereof, and belongs to the technical field of food. The purple sweet potato flaky pastry comprises, by weight, 100-150 parts of high-gluten flour, 50-60 parts of low-gluten flour, 100-120 parts of lotus seeds, 10-25 parts of white granulated sugar, 20-40 parts of sweet osmanthus honey, 30-50 parts of peanut oil, 50-60 parts of carrot juice, 50-80 parts of purple sweet potatoes, 20-28 parts of pumpkins, 10-15 parts of bacon, 5-8 parts of dried blueberries, 6-9 parts of dried mango and 5-9 parts of walnut kernels. The purple sweet potato flaky pastry is nutrient, healthy, reasonable in match and easy and convenient to make, has a little of fat mass, can be eaten by people at ease, can be eaten as dessert and staple food and can resist cancer if being eaten by people for a long time, so that the effect of purple sweet potatoes is sufficiently utilized, and purple sweet potatoes can be better developed and utilized.