Abstract: Extraction technology and antioxidant ability of anthocyanins from no crushing Sanhua plums were investigated. Firstly, mature plums as the raw materials were cut into certain thickness of sheet about 2 cm. Then using single factor and orthogonal method, the optimum extraction conditions were as following: pH 2, ethanol solution (70%) as solvent, 1：12(W/V) of material-to-liquid ratio for 50 min with ultrasonic power 400 W at 55℃. Under these conditions, the concentration of anthocyanins was up to the maximum, 21.98 μg/L. The organization of Sanhua plums after extraction was complete and could be used as material of preserved fruit. After purified by AB-8 macro porous resins and freeze-dried, the crude extract of anthocyanidins was obtained. The crude extract of anthocyanidins had good scavenging activity on hydroxyl radical and superoxide anion with scavenging ratio 51.21% of 2.4 mg/mL, and 48.70% of 0.4 mg/mL, respectively.