PURPOSE: A method for preparing a cosmetic material containing a snail fermentation is provided to ensure excellent skin absorption rate, antioxidation and whitening effects. CONSTITUTION: A cosmetic composition contains nanofermentation product which is prepared by mixing snail nanoextract and medium, inoculating lactic acid bacterial and fermenting. The lactic acid bacteria are Bifidobacterium longum, Lactobacillus acidophilus, or Lactobacillus plantarum. The cosmetic composition is manufactured in the form of a nutrition cream, massage cream, essence, eye cream, cleansing cream, pack, and spray. A method for manufacturing a cosmetic material containing a snail fermentation comprises: a step of preparing the snail nanoextract(S110)； a step of mixing the snail nanoextract with a medium for culturing the lactic acid bacteria(S120)； and a step of inoculating the lactic acid bacteria mixture to the medium and fermenting(S130). [Reference numerals] (AA) Start； (BB) End； (S110) Extracting pulverized snail nanopowder by ultrasonic wave and preparing snail nanoextract containing nanoparticles； (S120) Mixing snail nanoextract in a medium for culturing lactic acid bacteria； (S130) Inoculating lactic acid bacteria to the medium and fermenting개시된 본 발명에 따른 달팽이 발효물을 함유한 화장료 제조방법은 분쇄된 달팽이 나노분말을 초음파 추출하여 나노입자가 함유된 달팽이 나노추출물을 제조하는 단계(S110), 상기 달팽이 나노추출물을 유산균 배양배지에 혼합하는 단계(S120) 및, 상기 유산균 배양배지에 비피도박테리움 롱검(Bifidobacterium longum), 락토바실러스 애시도필러스(Lactobacillusacidophilus), 락토바실러스 플란타룸(Lactobacillus plantarum)의 혼합균주인 유산균을 접종하고 발효시키는 단계(S130)를 포함하는 것을 특징으로 한다.
