The invention discloses mold-culture-containing enzyme special for growing pigs and a preparation method thereof and belongs to the technical field of preparation of enzyme preparations. Barley malt, burnt malt, figs and pineapples which are rich in a variety of enzyme systems and garlic, vanilla beans, illicium verum and fennel which can enhance animal appetite and resist to and inhibit bacteria serve as main raw materials, the low temperature wall breaking and extraction technologies are adopted, effective constituents in the raw materials are extracted to the greatest extent, natural plant extract is prepared, meanwhile, aspergillus usamii which can produce high-vitality acid protease serves as an original strain for producing a mold culture containing high-vitality acidic protease, Chinese herbal extract, protective agents, activating agents, anti-oxidant and other food-grade feed enzyme are compounded scientifically, by means of the obtained feed compound enzyme, safe and comprehensive digestive enzyme is provided for the growing pigs, in addition, pleasant fragrance can be brought to feed, appetite of the growing pigs is enhanced, the digestion and absorption functions of the stomachs and intestines of the growing pigs are effectively improved, and productivity of the growing pigs is raised.