The present invention relates to a microbial contamination-controlled rice flour production process which comprises the following steps: a raw material insertion step, a steaming step, a molding step, a cutting step, a cooling step, a storing step, a drying step, a separation step, an alcohol treatment step, a metal detection step, a primary packaging step, a weight-based selection step, a visual selection step, and a box packaging step.1.원재료입고 2.증숙 3.성형 4.절단 5.냉각 6.담기 7.건조 8.분리 9.주정처리 10.금속검출 11.1차포장 12.중량선별 13.육안선별 14.박스포장