The invention provides a making method of orange-flavor potato chips. The making method includes following steps: 1), cleaning oranges, stripping orange peels, and preparing for use; 2), cleaning potatoes, adding the orange peels, boiling in water, cooling, and stripping potato peels to obtain softened potatoes; 3), putting the softened potatoes into Baijiu and linseed oil for soaking to obtain smashed potato; 4), deseeding and pulping the oranges after being peeled in the step 1), adding honey, citric acid, egg white and sorbitol, and stirring well to obtain orange paste; 5), decocting the orange paste, putting the orange paste into pepper water added with olive leaf, and refrigerating to obtain iced orange paste; 6), stirring, compressing, and slicing; 7), heating for baking. The orange-flavor potato chips are scientific and reasonable in formula, simple in raw material and low in cost; the making method is exquisite, impurities are removed which essence is extracted, and the potato chips made by the method are delicious in taste and rich in nutrition and are healthy food worthy of recommendation.