To investigate the effects of exogenous ABA on fruit quality of Chinese Dwarf Cherry（Cerasus humilis）,two cultivars（Nongda 6 and Nongda 7） were used as experimental materials. Different concentrations（25, 50, 100mg/L） of ABA were sprayed to the ripening fruits and the total flavonoid content（TFC）, total phenol content（TPC）and antioxidant capacity of treated fruits were determined. The results showed that under the three ABA treatments,the TFC, TPC and antioxidant capacity of Nongda 6 were all decreased, with the greatest decrease observed at 50mg/L. The inhibitory effect of ABA on the synthesis of fruit flavonoids and phenols was the most significant. The TFC, TPC and antioxidant capacity of Nongda 7 treated with 25 and 100 mg/L ABA were higher than those of the control, indicating that ABA at these two concentrations can promote the synthesis of flavonoid and phenol in Nongda 7 fruits, and the promoting effect was more obvious at 100 mg/L. In conclusion, the inhibitory effect of ABA on total phenols and flavonoids in Nongda 6 fruit was greater than that of Nongda 7 fruit.