Aerobic granular sludge was cultivated in a sequencing batch reactor with synthetic wastewater by seeding activated sludge.The mature aerobic granular sludge was obtained after 36 days with a diameter ranging from 2 mm to 5 mm.The COD removal efficiency is 90%.The kinetics of substrate degradation and biomass growth were discussed.The kinetic coefficients of Ks,Vmax,Y, Kd are 485.0 mg/L,1.2 h-1,0.156 kgMLVSS/COD,0.30 d-1 respectively.