The invention discloses a bio-membrane process denitrifying phosphorus removal and power generation device and belongs to the technical field of sewage disposal. The bio-membrane process denitrifying phosphorus removal and power generation device comprises a water tank, an anaerobic tank, a primary sedimentation tank, an aerobiotic tank, an anoxic tank and an end sedimentation tank which are connected in sequence, wherein the anaerobic tank and the aerobiotic tank are spaced by an ion exchange membrane, the anaerobic tank serves as an anode chamber of a microbial fuel cell, the aerobiotic tank serves as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are respectively and externally connected with a resistance box to form a closed circuit, the primary sedimentation tank and the anoxic tank are connected through a sludge delivery pipeline, the end sedimentation tank and the anaerobic tank are connected through a sludge return pipeline, and the end sedimentation tank is further provided with a water outlet and a sludge discharging port. The bio-membrane process denitrifying phosphorus removal and power generation device utilizes a two-sludge system process and microbial fuel cell coupling technology to dispose domestic sewage, can produce a stable voltage value while reducing the COD, TP and TN concentration in the sewage, effectively treats pollutants in the sewage and also produces clean electric energy.