Difference in 1 000-grain weight (GW) and resistant starch content (RSC) among the grains at different position and different grains between the loose and compact panicle types were studied. The results showed that the GW and RSC on the primary branches were greater than those on the secondary branches in both types at the same position within a panicle. On the primary branch, the GW of upper grain in a panicle was the greatest, and it had significantly less variation than that of middle and bottom grain; The RSC of middle grain was higher than that of upper and basal grain in loose panicle type rice while that of basal grain was the greatest in compact panicle type rice. On the same branch, the high RSC of different positions appeared at upper grain while low RSC was generally at the bottom grain. On the contrary, the high GW was distributed in the bottom grain.