NOVELTY - Multi-stage method for removing phosphor and producing hydrogen phosphide using phosphor-containing organic wastewater, involves preparing an anaerobic reactor, a microbial fuel cell, and a microbial electrolytic bath, connecting in sequence, introducing phosphor-containing wastewater into the anaerobic reactor, anode chamber of the microbial fuel cell and then cathode and anode chambers of the microbial electrolytic bath, and performing reactions, where during the reaction process, the phosphate, protons, and electronics in wastewater perform reactions.    USE - The multi-stage method is useful for removing phosphor and producing hydrogen phosphide using phosphor-containing organic wastewater (claimed).    ADVANTAGE - The method improves phosphor removing efficiency, produces hydrogen phosphide with high purity, is performed with less energy consumption and is environmentally-friendly.    DETAILED DESCRIPTION - Multi-stage method for removing phosphor and producing hydrogen phosphide using phosphor-containing organic wastewater, involves preparing an anaerobic reactor, a microbial fuel cell, and a microbial electrolytic bath, connecting the anaerobic reactor, microbial fuel cell, and microbial electrolytic bath in sequence, where the external circuit of the microbial fuel cell is provided with a battery, and the battery provides stable power to the microbial electrolytic bath through a voltage stabilizing device, introducing phosphor-containing wastewater into the anaerobic reactor to perform a anaerobic treatment, then introducing the wastewater into the anode chamber of the microbial fuel cell to trigger reactions to produce electric energy, introducing the wastewater into the cathode chamber and anode chamber of the microbial electrolytic bath from the water outlet of the microbial fuel cell, and performing reactions under a voltage of 3.2 V, where during the reaction process, the phosphate, protons, and electronics in wastewater perform reactions to generate hydrogen phosphide.