NOVELTY - A photoelectrocatalysis microbial fuel cell coupled system processing method involves preparing catalyst iron/titanium oxide. Catalyst supported adhesive electrodes are prepared by mixing anhydrous ethanol and TEOS, and slowly adding concentrated hydrochloric acid, deionized water and mixture. Catalytic electrode is prepared followed by preparing photocatalytic reactor by placing catalyst iron/titanium oxide loaded with steel mesh electrodes into methylene blue solution, top placing a tungsten halogen lamp, placing in a separate two-room, and separating chambers by membrane.    USE - Method for processing photoelectrocatalysis microbial fuel cell coupled system for degrading biodegradable pollutants.    ADVANTAGE - The system solves the low coulombic efficiency of existing MFC, produces less electricity, and recycles waste water and energy issues such as biodegradable pollutants after coupling.    DETAILED DESCRIPTION - A photoelectrocatalysis microbial fuel cell coupled system processing method involves preparing catalyst iron/titanium oxide by adding activated powder with Iron sulfate heptahydrate, dispersing the mixture into mixed liquid under nitrogen, adding sodium borohydride, continue nitrogen, and finally the resulting mixture centrifuged, the precipitate washed with water and separating, washing with ethanol, drying under vacuum and grinding. Catalyst supported adhesive electrodes are prepared by mixing anhydrous ethanol and TEOS, and slowly adding concentrated hydrochloric acid, deionized water and a mixture of 36% with stirring, spare. Catalytic electrode is prepared by taking the prepared catalyst in 50% acidic silica sol dispersion, stirring, ultrasound, sufficiently dispersed in an acidic silica sol, and coating mixture uniformly on a stainless steel mesh electrode, and placing electrode under vacuum drying at 60 degrees C followed by preparing photocatalytic reactor by placing catalyst iron/titanium oxide loaded with stainless steel mesh electrodes into methylene blue solution, top placing a tungsten halogen lamp, by the reaction to the system air, methylene blue solution built with a thermometer, the entire device in a water bath to control the reaction temperature, optical / electro-catalytic microbial fuel cell coupled system by using catalyst stainless steel mesh electrode as the cathode, producing electrical loaded with microorganisms activated carbon particles as an anode, placing in a separate two-room after connecting wires and resistance, separating two chambers by a proton exchange membrane, respectively methylene blue solution and tetracycline solution.