High acid value of rice oil and monoglycerid were used as raw material. On the basis of single factor, various factors were selected by Plackett-Burman test. The results showed that reaction time, reaction temperature and enzyme dosage were the main influencing factors of enzymatic preparation of rice oil enriched diacylglycerol. The Box-Behnken response surface method was used to optimize the process conditions, The optimum conditions were as follows: reaction time 9.7 h, reaction temperature 67℃ and enzyme dosage 3%. Under th...