The present invention relates to a low-stage rice manufacturing method and a manufacturing apparatus, and more particularly, the enzyme of the upper and lower layers than reacting the protease reaction liquid was stationary optimum unless circulation by giving to continuously circulate in pH and temperature maintain eliminates the pH difference of the reaction solution given improved enzyme reaction efficiency and removed because it can be even process a large amount of rice evenly exposed to the enzyme reaction solution by giving to the aeration, as well as a protein removal efficiency extremely high, intermittently protein is a more effective, thereby providing the low-stage relates to white rice and aseptic packaged rice for industrialization as a possible low-stage rice manufacturing method and a manufacturing apparatus.Low-stage rice, protein removal, protease, cyclic, packed rice본 발명은 저단백미 제조방법 및 제조장치에 관한 것으로, 더욱 상세하게는 단백질 분해효소 반응액을 최적의 pH와 온도에서 계속적으로 순환시켜 줌으로써 순환되지 않는 정치식으로 반응시키는 것보다 상층부와 하층부의 효소반응액의 pH 차이가 없게 유지시켜 주어 효소반응 효율성이 향상되고 단백질 제거 효과가 매우 높아질 뿐만 아니라, 간헐적으로 폭기를 시켜 줌으로써 대량의 쌀을 처리하더라도 효소반응액에 균일하게 노출될 수 있기 때문에 단백질 제거가 더욱 효과적이며, 이로써 무균포장밥과 같은 공업화를 위한 저단백미 제공이 가능한 저단백미 제조방법 및 제조장치에 관한 것이다.