In order to find out the relationship between electricity generation and organics degradation in anaerobic fluidized bed microbial fuel cell, the model of organics degradation based on mass balance and biomass growth was developed. The model of electricity generation based on inflow, external resistance and substrate concentration of influence was also developed. The parameters of the two models were estimated and validated using experimental data obtained in an anaerobic fluidized bed microbial fuel cell used to treat high-strength organic wastewater. The model of organics degradation is q=0.607S/398.82+S and the model of electricity generation is U=96485S/8·Q·(6×10－6S－0.0133)·Rex.
