NOVELTY - Culturing nitrosated aerobic granular sludge for treating with domestic sewage, by packing the rest active sludge discharged by municipal sewage plant in sequencing batch reactors (SBR) as muddy seed, opening the water inlet valve and pumping waste water from the upper part of the SBR reactor, after the feeding process aerating the water, decomposing organic substance, aminating the organic nitrogen and nitrifying the ammonia nitrogen, precipitating and then discharging the treated water out of the reactor.    USE - The method is useful for culturing nitrosated aerobic granular sludge for treating with domestic sewage (claimed).    ADVANTAGE - The content of ammonia oxidizing bacteria and volume load are improved, nitration reaction time is shortened, settlement property of the sludge is improved, precipitating time is shortened and area occupied by reactor is reduced. The nitrosated aerobic granular sludge is suitable for treating low chemical oxygen demand (COD) and high-ammonia nitrogen waste water.    DETAILED DESCRIPTION - Method for culturing nitrosated aerobic granular sludge for treating with domestic sewage, involves (i) packing the rest active sludge discharged by municipal sewage plant in sequencing batch reactors (SBR) as muddy seed, where the SBR reactor is in cylindrical shape, the height-diameter ratio is 1.8-10, the volume exchange rate is 50-70%, and water temperature is 20-25 degrees C, (ii) feeding water, aerating, precipitating and discharging water, where the period time is 6-8 hours, (iii) opening the water inlet valve, pumping waste water from the upper part of the SBR reactor, and after reaching preset water level, automatically stopping feeding water, (iv) after feeding water, opening the air compressor and the air inlet valve, introducing compressed air, where the air flux is 0.02-0.10 cubic meter/h, decomposing organic substance, aminating the organic nitrogen and nitrifying the ammonia nitrogen, controlling aeration time in fuzzy manner, and after ending the nitrosation, closing the air compressor and air inlet valve, (v) closing the water inlet valve, air inlet valve and water outlet valve, and precipitating, setting initial precipitating time as 30-50 minutes, by improvement of sludge precipitating performance, shortening gradually, and then setting as 3 minutes finally, setting initial precipitating time as 5-8 minutes, by improvement of sludge precipitating performance, shortening gradually, and setting as 3 minutes finally, and (vi) opening the water outlet value, discharging the treated water out of the reactor, stably opening for 15-20 days, preparing nitrosated aerobic granular sludge in reactor, where fuzzy control rule of the aeration time is stopping aeration when first derivative of the pH changes from negative number into positive number, and aeration time is more than 3 hours, or fuzzy control rule of the aeration time is maintaining original aeration quantity when deviation of oxygen dissolved concentration (DO) is positive small or positive middle, and when deviation of DO reaches positive big, and first derivative of the DO reaches positive middle or positive big, stopping aeration.