Abstract: To investigate the effect of the technological process consisting of foam separation and three-dimension electrode reactor for starch wastewater treatment，a pilot test of about two months was conducted on the spot. The results demonstrated that the chemical oxygen demand (COD) removal rate could reach 52.1% and the quantity of protein taken from raw water was about 2.5kg/t with the air-water flow ratio of 10 with the running of the foam separation process. The COD removal efficiency of 96.9% also could be obtained with the conditions of reaction time 70min，input voltage 10V and inter-electrode distance 15cm by using the three-dimension electrode reactor，at the same time，the energy consumption for the electro-oxidation process was only 1.78kW·h per ton wastewater.