The invention relates to a pet feed which is prepared from maltodextrin, starch, amino acids essential to pets, vitamins, mineral substances, plant roots and stems, gourmet powder, table salt, fatty acid, soybean flour, algae powder, lysine, sodium ascorbate, bone meal, carrot powder and fruit of Chinese wolfberry by uniformly mixing, grinding, preprocessing and mixing. Shelf life of the pet feed is longer than two years. The pet feed is applicable to domesticated pet dogs and cats, also can be used for professional pet farms, and is functional nutrition powder capable of boosting immunity, relieving separation anxiety, reducing depression and relieving emotion of pets; the pet feed disclosed by the invention, as the best natural nutritional supplement, is high in nutrition value and free of food additives; fed with the pet feed, the pet is bright in hair color, good in spirit and active and both immunity and disease resistance are greatly improved.