The present invention discloses a carrot and potato cake production method and belongs to the field of food processing. The carrot and potato cake is characterized by being prepared from 5 kg of mashed carrots, 12 kg of mashed potatoes, 1 kg of mashed purple Chinese yams, 200 g of refined salt, 35 g of monosodium glutamate, 120 g of rose sauce, 300 g of malt starch, 240 g of radix puerariae powder, and 80 g of corn dextrin. The processing processes are as follows: raw material selecting, washing, peeling, slicing, rinsing, cooking, crushing, pre-dehydrating, material blending, forming, paste applying and powder spraying, oil-frying, cooling, quick-freezing, packaging and freezing. The beneficial effects are as follows: the carrot and potato cake is crisp in taste, is sweet, fragrant and palatable, is rich in flavor, and has a unique sweet and fragrant flavor of potatoes. The carrot and potato cake is very high in nutritional value and rich in protein, vitamins and other nutrients, is conducive to food digestion and absorption of human body, enhances the human body immune function, has efficacies of strengthening spleen and harmonizing stomach, benefiting qi and regulating middle energizer, expelling toxins and beautifying features, lowering pressure and resisting aging, is a green and nutritional food which is suitable for people at all ages and is economical and affordable, can be stored for a long time, is easy for carrying, and can be used as travelling solid food and convenience meal.