The present invention relates to a method for manufacturing fermented grain health food for weight loss. The grain health food for weight loss is nutritional food, beneficial for health, and provides a weight loss effect. More specifically, the present invention relates to a method for manufacturing fermented grain health food for weight loss which is finished by preparing rice, brown rice, barley, wheat, pearl barley, shitake mushroom, dried trifoliate orange, and corn silk as compositions, fermenting the compositions with Aspergillus niger and performing freezing, drying, and grinding processes. The method for manufacturing fermented grain health food for weight loss comprises: a grain selecting step (S1) of grains consisting of rice, brown rice, barley, and wheat (grains from now on) a grain washing step (S2) of washing the grains after the grain selecting step (S1) a grain steaming step (S3) of steaming the grains after the grain washing step (S2) a grain room-temperature cooling step (S4) of cooling the grains at room temperatures a grain agitating step (S5) of culturing cultured microorganisms (limited to Aspergillus niger) in the grains at room temperature, uniformly mixing the grains with the microorganisms, and agitating the same to enable the grains to be smoothly fermented a dietary fiber raw material inserting step (S6) of mixing pearl barley, shitake mushroom, dried trifoliate orange, and corn silk with the grains being agitated when a time predetermined in the grain agitating step (S5) comes a grinding step (S7) of performing freezing and drying processes and then a grinding process after the dietary fiber raw material inserting step (S6) and a packaging step (S8) of performing packaging after the grinding step (S7).COPYRIGHT KIPO 2017본 발명은 발효곡물 다이어트 건강식품 제조방법에 관한 것으로서, 영양식을 하면서 건강에 도움이되고 다이어트 효과를 주는 다이어트 건강식품으로서 상세하게는 쌀, 현미, 보리, 밀, 율무, 표고버섯, 건탱자, 옥수수수염을 조성물로 하고 여기에 흑국균으로 발효시켜 동결건조와 분쇄과정을 걸쳐 완성시킨 다이어트 건강식품 제조방법에 관한 기술이다.제조방법은 다음과 같다쌀, 현미, 보리, 밀(곡물이라 칭함