traditional rice processing often leads to the loss of a lot of nutrients in rice, and it has a simple taste. Nutrition rice production line is another innovative application of twin screw extrusion technology. It can be completed once from raw material processing, extrusion curing, molding and drying. It can also be used to produce nutritive enriched rice with various vitamins and minerals necessary for human health in proportion. This production technology can not only retain the original composition of ordinary rice, but also produce coarse grain rice. With the improvement of people's living standard, people have higher requirements for food on dining table, and nutrition rice products show a good market prospect.