In order to achieve high efficient nitrogen removal from high ammoniumnitrogen swine wastewater, sequencing batch reactor activated sludge process (SBR) was used to treat swine wastewater to the phenomenon which the urea (mainly from pig urine) hydrolysis of swine wastewater was accompanied by changes of pH value. Under conditions of normal temperature (20℃) and non-restricted dissolved oxygen, effects of pH value and aeration time on ammonium removal, characteristics of shortcut nitrification were studied. The results showed that nitrite accumulation rate was 75%～80% when pH value was 7.0～9.5. Shortcut nitrification would not affected by long-term aeration. In the biological treatment process of high ammonium-nitrogen wastewater concentration, the nitrite accumulation was related to levels of pH value, free ammonia (FA) and free nitrite (FNA) in influent.