The invention discloses a crisp sweet potato chip food preparation method which is characterized in that the crisp sweet potato chips are prepared from the following raw materials in parts by weight: 30-50 parts of sweet potato powder, 10-25 parts of corn flour, 10-25 parts of carrot powder, 10-25 parts of wheat flour, 10-25 parts of peanut powder and 5-15 parts of honey. The crisp sweet potato chips prepared through the preparation method disclosed by the invention can meet needs of different tastes, the kind of the sweet potato flavored food is increased, in addition, a new approach is provided for development and utilization of sweet potato resources, and the crisp sweet potato chips are rich in nutrition, can be eaten by people of all ages, have the strong natural flavor and unique taste of the sweet potatoes, are good in eating taste, and can increase dietary preference of people; since a superfine grinding technology is adopted, distribution and absorption are facilitated; meanwhile, all components can be combined tightly, so that mixing uniformity is good, the finished products are strong in flavor, fragrant, sweet and palatable, the production cost is low and the crisp sweet potato chips have a better price advantage and a better market prospect.