Abstract:The study aims to analyze the content and distribution of various mineral elements in paddy rice processed to different degrees. To be specific，paddy rice was processed to yield brown rice，rice with 80% bran left，rice with 50% bran left，and milled rice，respectively. The content and distribution of Na，Mg，K，Ca，Mn，Fe，Cu，Zn and Se in them were detected by microwave digestion-double quadrupole/collision/reaction cell technology-inductively coupled plasma mass spectrometry（ICP-MS），and 45Sc and 89Y were used as internal standards.The limit of detection，precision，and recovery of the method were investigated，and national standard reference materials were employed for verification. The results showed that the standard curve of each element had good linearity，with correlation coefficients of 0.999 1-0.999 9 and detection limits of 0.009 0 ng/mL-0.870 0 ng/mL.The relative standard deviations were in the range of 1.07%-3.13% and the recovery fell in the range of 89.5%-107.2%. The distribution of different elements differed significantly in rice processed to different degrees. The content of most mineral elements decreased with the processing and particularly，the content in brown rice was several times that in milled rice.