The invention discloses a special Chinese herbal medicine feed additive for meat hogs and preparation and feeding methods thereof, relates to a feed additive capable of forming a special flavor of pork and belongs to the field of feed additives. The additive is characterized in that the additive is prepared from the following Chinese herbal medicines according to certain weight ratios: liquorice roots, Chinese angelica, radix astragali, codonopsis pilosula, cortex eucommia, fructus ligustri lucidi, thymes and the like, wherein the additive is uniformly added into feed by stirring, and meat hogs which need to be slaughtered after two months are fed by the feed. The special Chinese herbal medicine feed additive for the meat hogs the beneficial effects that the plurality of edible Chinese herbal medicines are reasonably proportioned and are carefully blended to realize a synergistic effect; good effects and functions of the additive on meat hog organisms are relatively highly expressed, the disease resisting capability of the meat hogs is enhanced and the meat hogs grow more healthy; and the pork has a special flavor, a better taste and more nutrients and safer quality.