Abstract:To high-quality japonica glutinous rice as the raw material，acetyl content of acetylated distarch adipate glutinous rice powder was determinated by acid-base titration method.Through research，the influence factors of acetyl content of acetylated distarch adipate glutinous rice powder were obtained that they were the rice milk baume degrees，reaction temperature，reaction pH and the addition amount of mixed anhydride.The conclusions were drawn that met the requirements of product application，the best and most economical parameters were that the rice milk baume degrees was 22°Bé reaction temperature was 20℃，reaction pH was 8.5，the addition amount of mixed anhydride was 3%.