The treatment of papermaking wastewater with combined technologies of coagulation, and intensified micro-electrolysis-hydrolysis acidification-SBR was studied. The results show that the removal rates of COD, SS, ammonia nitrogen, total phosphorous, and BOD were 88. 23%, 98. 47%, 86. 78%, 98. 68%, and 82. 56%, respectively, and the biodegradability of wastewater increased from 0. 32 to 0. 42 with coagulation and H₂O₂/MnO₂/micro-electrolysis. Treatment with the hydrolysis acidification-SBR process generated average concentrations of COD, SS, ammonia nitrogen, total phosphorous, and BOD in the effluent water of 85 mg/L, 0 mg/L, 1. 42 mg/L, 0. 1 mg/L, and 30 mg/L, respectively. Fifteen days after the treatment, the average concentration of COD was 5865 mg/L in the influent water and 85 mg/L in the effluent water, and the total removal rate of COD was 98. 55%. The effluent water met the gradeⅠstandard for wastewater discharge.