PURPOSE: Functional Yuja cheong(honey citron) containing diet enzyme, herb medicines and functional materials is provided, which stimulates immune system and lymph system to prevent and recover diseases, inhibits aging and improves immunity in animals and plants without side effects. CONSTITUTION: The method for preparing the functional Yuja cheong(honey citron) containing diet enzyme, herb medicines and functional materials comprises the steps of: fermenting a mixture of grains such as cowpea, oats, buckwheat, Chinese millet, rice, barley, job's tear, foxtail millet and bean, fruits such as apple and grape, carbohydrates such as potato, sweet potato, burdock, hemp, sugar, starch and arrowroot starch, and sugarcane, pulp and alcohol to prepare vinegar containing diet enzyme; mixing 100 kg of a mixture of functional materials containing herb medicines, described in page 3 with 100 kg of a fruit mixture of maesil(Japanese apricot), ginger, grape, banana, pear, pineapple, jujube, chestnut, apple, melon, watermel
