NOVELTY - Microbial fuel cell comprises a microfluidic device having an inlet and an outlet unit for intake and discharge of culture fluid containing cells, microchannel portion for capturing the cells in the culture fluid, microprobe-array device having microprobes as anodes for extracting electrons produced during cell metabolism, and delivering the extracted electrons to an external circuit outside the cells, and cathodes for delivering the electrons used in the external circuit to an electron acceptor outside the cells.    USE - The microbial fuel cell is used in energy production process and environment sensor manufacturing technique.    ADVANTAGE - The fuel cell enables to insert several single cells easily into the microprobes, and replaces the cells easily, can be reused, and manufactured simply and cost-effectively, consumes less space, has increased energy density, and is environmentally-friendly.    DETAILED DESCRIPTION - Microbial fuel cell comprises a microfluidic device (510) having an inlet and an outlet unit for intake and discharge of culture fluid containing cells (511), microchannel portion (515) for capturing the cells in the culture fluid and interconnecting the inlet portion and the outlet unit, microprobe-array device having microprobes as anodes for extracting electrons produced during cell metabolism, and delivering the extracted electrons to an external circuit outside the cells, and cathodes (540) for delivering the electrons used in the external circuit to an electron acceptor outside the cells. An INDEPENDENT CLAIM is included for microfluidic device for microbial fuel cell, which comprises an inlet unit in which the culture medium containing cells is flowed in, outlet unit in which the culture medium containing cells is flowed out, and underlayer (516) which can be penetrated with the outside microprobe inserted into cells within the microchannel portion.    DESCRIPTION OF DRAWING(S) - The drawing shows a microfludic device for the cell capture as a part of the microbial fuel cell and cell broth supply.    Microfluidic device (510)    Cell (511)    Microchannel portion (515)    Underlayer (516)    Cathode (540)