This study aims at determining changes in the level of carbohydrates and protein during the storage process. The results show that during six-month storage, there are decreases in the levels of carbohydrates and protein content in rice grains. Decreased levels of carbohydrate occurred on red rice obtained from Manado Bersehati market (52.23%), followed by red rice from Karombosan market (41.21%). Control rice with insects and fungi protection treatments' experienced the smallest level of carbohydrate decrease (9.20%). The largest protein content decreased occurred in red rice obtained from Bersehati Market (5,45%), followed by red rice from Karombasan market (4.93%). The smallest decrease occurred in the control rice Superwin obtained from Market Bersehati (0.96%). Long period storage affects the quality of rice.