The implementation standard of Yixiang rice is GB/T 19266. In addition, in order to ensure the quality of fragrant rice, there are other requirements, such as the number of live bacteria should not exceed 1000 /g, the organic matter content should not exceed 0.5%, the moisture content should not exceed 14.5%, the impurity content should not exceed 0.2%, and the damaged rice content should not exceed 1.5%. There are also some special requirements, such as fragrant rice can not have harmful substances, flavor enhancers and pigments are not allowed.