tThe structures (morphology, molecule, and crystallinity) and functional properties (gelatinization,hydrolysis, and in vitro digestion) of normal rice starches with different amylose contents were inves-tigated and their relationships were analyzed. The results showed that the morphology, granule size,and crystalline type did not significantly change among rice starches. The molecular structure (amylosecontent, amylopectin branch-chain content, and amylopectin branching degree) and crystalline structure(relative crystallinity, IR ratio of 1045/1022 cm−1, lamellar peak intensity, and lamellar distance) signif-icantly varied among rice starches, which resulted in different functional properties. The gelatinizationtemperature and water solubility were significantly positively correlated with amylose content but sig-nificantly negatively correlated with amylopectin short branch-chain. The swelling power, hydrolysisand in vitro digestion were significantly positively correlated with amylopectin short branch-chain, rel-ative crystallinity, IR ratio of 1045/1022 cm−1, and lamellar peak intensity but significantly negativelycorrelated with amylose content and lamellar distance.