The invention discloses a feed and a preparation process thereof. The feed is composed of the following components in parts by weight: 40-50 parts by weight of corn flour, 20-25 parts by weight of hawthorn powder, 20-25 parts by weight of sweet potato powder, and 30-25 parts by weight of fish meal 35 parts by weight, 2-5 parts by weight of vitamins, 5-8 parts by weight of amino acids, 1-4 parts by weight of trace elements, 1-2 parts by weight of ethoxyquin, 2-5 parts by weight of sodium propionate, 3-5 parts by weight of cinnamon powder Parts by weight, calcium formate 2-4 parts by weight, sodium glutamate 1-3 parts by weight. The various components of the present invention have a synergistic effect on each other, wherein the food-attracting effect of hawthorn powder, fish meal, sodium glutamate and amino acids can improve the mouthfeel of the feed, improve the appetite of pigs, and increase food intake , promote growth, and shorten the growth cycle; the present invention adds a certain amount of ethoxyquin, calcium formate, sodium propionate, and cinnamon powder to the additive, and the three act together to effectively prevent the feed from being oxidized and mildewed. It has the effect of sterilizing and attracting food.