The invention discloses a black carp feed and its preparation method, and the black carp feed comprises the following raw materials: by weight, 12-14 parts of freshwater shrimp powder, 30-34 parts of sorghum flour, 12-14 parts of soybean meal, 7-9 parts of sweet potato powder, 3-4 parts of loach powder, 4-5 parts of corn protein powder, 2-3 parts of tenebrio molitor, 1-2 parts of salt, 1-2 parts of jasmine flower powder, 2-3 parts of green tea powder, 2-3 parts of violet pollen, 1-2 parts of clove, 2-3 parts of roughhaired holly root, 1-2 parts of galium aparine and 3-4 parts of a feeding promoting agent; and the black carp feed is scientific and reasonable in formulation, can meet the growth needs of black carp in every stage, effectively improves the meat quality and nutritional value of the black carp, promotes the growth of the black carp, facilitates management, is convenient to prepare, and effectively controls the feed cost.