NOVELTY - Method for accelerating aerobic granular sludge culture, involves selecting sequencing batch reactor, adding mixed liquor suspended solids of aerobic flocculent active sludge to the reactor, adding hydrotalcite particle, preparing simulated wastewater, adding predetermined concentration of nutritive and trace elements to ensure growth of microorganisms, operating sequencing batch reactor, and operating sequencing batch reactor for 2-3 weeks, where the hydrotalcite particle are attached to biomembrane to form aerobic granular sludge within 4 weeks.    USE - The method is useful for accelerating aerobic granular sludge culture.    ADVANTAGE - The method ensures stability of aerobic granular sludge and improves removal effect of ammonia and COD.    DETAILED DESCRIPTION - Method for accelerating aerobic granular sludge culture, involves (a) selecting sequencing batch reactor, where ratio of height and diameter of the reactor is 6:10, (b) adding mixed liquor suspended solids (MLSS) (2 g/l) of aerobic flocculent active sludge to the reactor, (c) adding hydrotalcite particle (3 g/l) as sludge granulation accelerant to the reactor, where hydrotalcite particles are layered double hydroxides (LDHs) containing magnesium aluminum carbonate-LDH, ratio of magnesium and aluminum is 2-3:1, and average particle diameter of the LDH is 100-300 mu m, (d) preparing simulated wastewater, where chemical oxygen demand (COD) of the wastewater is 600-1000 mg/l, and ammonia nitrogen concentration is 80-120 mg/l, and adding predetermined concentration of nutritive and trace elements to ensure the growth of microorganisms, where the simulated wastewater has pH of 6, (e) operating sequencing batch reactor for 4 hours at room temperature, where water inlet time is 10-15 minutes, aeration time is 180-220 minutes, settling time is 5-20 minutes, effluent time is 2-5 minutes, aeration rate is 0.0132-0218 m/s and dissolved oxygen concentration is 5-8 mg/l, and (f) operating the sequencing batch reactor for 2-3 weeks, where the hydrotalcite particle are attached to biomembrane to form aerobic granular sludge within 4 weeks.