The present invention relates to a preparation method of a fermented powder for removing odor and fat smell from livestock by-products, which annihilates odor and fat smell, maintains smooth and savory tastes of the livestock by-products, and enables storage periods of the livestock by-products to be extended by mixing perilla seed dreg, rice embryo bud and rice bran with lactobacillus, and fermenting the mixture to obtain a fermented product into fine particles and forming a lactobacillus coating film on the livestock by-products such as entrails, skin and the like of livestock by using the fermentation product to block penetration of harmful bacteria from the outside of the livestock by-products, and allowing enzymatic action of lactobacillus to perform enzymolysis of feces and smell causing materials remained in creases of the entrails, pores of the skin, and blood within the livestock by-products； and a using method of the fermented powder. Namely, the preparation method of the present invention comprises: a first step of sterilizing perilla seed dreg, rice embryo bud and rice bran, and mixing the sterilized perilla seed dreg, rice embryo bud and rice bran； a second step of mixing lactobacillus with a mixture of the first step and kneading a lactobacillus-mixed material to prepare a fermentation composition； a third step of fermenting the fermentation composition in a fermenter to prepare a mixed fermentation product； a fourth step of drying the mixed fermentation product of the third step； and a fifth step of milling a dried mixed fermentation product of the fourth step into fine particles to prepare the fermented product.본 발명은 들깨박, 쌀눈, 미강을 유산균과 혼합하여 발효시켜 미립자로 만든 발효산물을 이용하여 축산 부산물(가축의 내장 및 껍질 등)에 유산균 코팅막을 형성하여 외부로 부터 유해균의 침투를 차단하고 내부로는 유산균의 효모작용에 의해서 내장의 주름과 껍질의 모공과 혈액속에 잔재해 있는 분변과 냄새 유발물질들을 효소분해하는 수단으로 악취 및 누린내를 소멸시키고 부드럽고 담백한 맛을 가지면서 보관 기간을 연장할 수 있도록 한 축산 부산물의 악취 및 누린내 제거용 발효분말 제조방법 및 그 사용방법에 관한 것이다.즉, 본 발명은 들깨박, 쌀눈, 미강을 각각 살균 처리하고 이를 혼합하는 제1단계, 상기 단계의 혼합물에
