The invention relates to the field of food processing, in particular to a spice for preparing stewed cock and a preparation method of the spice. The spice for preparing the stewed cock comprises edible oil, table salt, strip pepper paste, garlic, bean sauce, soy sauce, amazake, red chilli power, ginger, rodchilli, aginomoto, pickled ginger, sugar, zanthoxylum schinifolium, pickled peppers, spice mixture, red zanthoxylum schinifolium, savory flavoring and Disodium 5'-ribonucleotide and has spicy, hot, fresh and delicious flavors and the like; and no any preservative is added, so that the food safety is guaranteed. The spice provided by the invention is simple in preparation process and is easy to realize industrial production.