Abstract: This paper presents the technique features of sulfur recovery unit in Sinopec Jinling petrochemical company. Based on brief introduction of principle of acid gas treatment and ammonia incineration, the three main factors which affect ammonia burning in oven were analyzed in detail. The problems in the ammonia bearing gas treatment in 50kt/a sulfur recovery unit and possible countermeasures were discussed. Some of practical technical solutions and experiences for long stable operation of treating the ammonia bearing acid gas were also introduced. By above countermeasures, SO2 emission is decreased to 424 mg/m3, friendly to environment. The NOx emission can be effectively controlled to less than 55 mg/m3.