This paper introduces the design and debugging of a project for treating high concentration wastewater containing notrobenzene by the process of microelectrolysis UASB PACT,and its experience in successful operation.When the influent with a COD Cr of 5 620 ~ 7 090 mg/L is treated by this process,the indexes of the effluent can meet the first\|order of GB8978-1996,and the average removal rate of COD Cr is over 98%.