This article introduces the debugging process of the treatment of biological pharmacy wastewater by hydrolysis acidification - SBR process. The engineering examples show that the biological pharmacy wastewater can be treated effectively by this process,which has highly concentrated organic impurities and large variety of wastewater quality and flux. The water quality of the final effluent can meet the First Grade of the National Effluent Discharge Standard, and the residual sludge is treated effectively. It has notable advantage such as simple design,flexible operation, less land and stable effect on treatment. Therefore, this process is worthy to be popularized.