In order to improve the efficiency and effect of papermaking wastewater treatment control system,we redesigned control process of the paper mill sewage treatment system mechanical and electrical equipment.In order to realize the automation control,we have designed it with the advanced FPGA technology science and technology field,using MAX7000AE series of FPGA.Designing each part of the control program with VHDL language,design,simulation and debugging of the Control chip can be realized in Quartus Ⅱ.