The invention provides a preparation method of day lily fruit and vegetable crisp chips. The preparation method comprises the following steps: (1) carefully selecting fresh day lily, performing fixation in boiling water, performing washing with water, performing cooling and performing draining; (2) chopping the day lily after fixation, performing transferring to a high-speed shearing
machine, adding water according to a ratio of 100 parts of the day lily after fixation and 25-40 parts of water, performing shearing at a high speed to obtain day lily pulp, adding 10-20 parts of
starch, 0.2-1 part of edible salt and / or 1-5 parts of
sucrose, continuously performing shearing, performing uniform dissolving, heating the obtained mixed pulp to 60-75 DEG C by a continuous forming pelleter, performing gelatinizing and performing
cutting into slices; and (3) performing frying in a
vacuum fryer to be crisp, performing spin-
drying to remove oil, performing cooling, performing grading, and performing packaging in a moistureproof manner to obtain the day lily fruit and vegetable crisp chips. The day lily fruit and vegetable crisp chips obtained by the method are not greasy, crisp in mouth feel and delicious in
flavor, well maintain color, appearance,
flavor, taste and
nutrition of the day lily, have the characteristics of low fat,
low calorie, high
cellulose and the like, are convenient to eat, and are suitable for people of all ages.