The grain quality traits and their relationships of 86 medium amylose content hybrid rice combinations were studied and analyzed in Sichuan Province. The results showed that the quality traits are quite different. The difference in chalkiness degree was the biggest, CV was 33.22%; followed by chalky rice rate, CV was 23.32%; the last was brown rice rate, CV was 1.01%. According to the high quality rice standards of individual traits, except the amylose content, the high compliance rate are gel consistency and head milled rice rate, there are 94.19% and 86.05% combinations up to three grade quality rice; the low compliance rate are chalky rice rate and chalkiness degree, there are only 3.49% and 4.65% combinations up to three grade quality rice. Comprehensive quality indexes of 2 combinations reach three grade quality standards in the 86 indica hybrid rice combinations. Correlation analysis results showed that in medium amylose content（15%~24%）, amylose content is highly significant positive correlation with chalky rice rate and chalkiness degree; gel consistency is highly significant negative correlation with protein content; chalkiness degree is highly significant negative correlation with length-width ratio, and highly significant positive correlation with chalky rice rate; length-width ratio is highly significant negative correlation with head rice rate and chalky rice rate. It is main target to ruduce the chalky rice rate and chalkiness degree and then pay attention to the selection of strong resistant to rice milling in rice quality improvement.