To develop a shortcut nitrification process for treating anaerobic digested piggery wastewater with a high ammonia concentration, a sequencing batch reactor (SBR) was introduced, and the temperature, ammonia nitrogen loading rate (Rnl) and aeration time were investigated as the significant influence factors of the shortcut nitrification. The shortcut nitrification process could be established in the SBR at 28 ℃ or 15 ℃ with the identical dissolved oxygen (DO), ranged from 1 to 2 mg·L-1. But the ammonia removal and nitrite accumulation rate Rna were decreased from 71.1％ and 96.7％ to 52.8％ and 85.4％, respectively, when the temperature was dropped from 28 ℃ to 15 ℃. Though the ammonia removal rate was decreased to 48.6％ since the Rnl had been increased from 0.56 to 2.18 kg·m-3·d-1 at 28 ℃, a Rna as high as 96.8％ was obtained, indicating that an excellent shortcut nitrification occurred in the SBR. To obtain a superior ammonia oxidation with a higher Rnl, extension of aeration time would be supportive. But an excessive aeration could result in an increase in nitrate and a decrease in Rna, which was unfeasible for the shortcut nitrification process in the SBR.