Abstract: In order to assess the dietary exposure risk of pyrimethanil residue in blueberries, the terminal residues and decline trends of pyrimethanil used in blueberries were studied. The dietary exposure and risk assessment were conducted based on the supervised field trial data. The blueberries were sprayed in 2 times at an interval of 7 d with pyrimethanil at a dosage of 360 a.i. g/hm². The results showed that the average recoveries of pyrimethanil in blueberry samples at five spiked levels from 0.01 mg/kg to 1 mg/kg were 97%-100% , with the relative standard deviation (RSD) ranged from 4.5% to 12%. The limits of quantification (LOQs) of pyrimethanil in blueberries was 0.01 mg/kg. The decline dynamics of pyrimethanil accorded with the first-order kinetics, and the half-lives of pyrimethanil was 3.2 d . At 3, 5, 7, 10 days after the last application, the terminal residue levels of pyrimethanil at harvesting was 0.18-1.54 mg/kg. Chronic risk quotient of pyrimethanil was calculated from residue trial data, their acceptable daily intake, dietary consumption of berries in 97.5% and body weight of Chinese residents of all ages which from GEMS. The long-term dietary intake risk assessment at 97.5% food consumption showed that the contribution rate of blueberries residues to the ADI for all ages was less than 0.1%. This indicated that the chronic dietary intake risk of pyrimethanil through blueberries was very low.