PURPOSE: A producing method of fermented drink containing pleurotus ostreatus is provided to secure the improved antioxidant activity of the fermented drink. CONSTITUTION: A producing method of fermented drink containing pleurotus ostreatus comprises the following steps: washing and drying the pleurotus ostreatus, and cutting and crushing the dried pleurotus ostreatus for obtaining pleurotus ostreatus powder； mixing the pleurotus ostreatus powder, black sugar, bacillus subtilis, and purified water, and fermenting the mixed liquid at 45~55deg C for 36~60hours； inserting acetobacter aceti to the fermented liquid, and fermenting the mixture for 20~40days at 25~35deg C: filtering and sterilizing the fermented liquid, and packing； and adding oligosaccharide to the liquid.본 발명은 항산화 활성이 증가된 느타리버섯 발효음료의 제조 방법 및 상기 방법으로 제조된 느타리버섯 발효음료에 관한 것으로, 상기 느타리버섯 발효음료는 파우치 팩으로 제조되어 휴대가 간편하여 상복할 수 있는 기능성 음료이다.
