NOVELTY - Hydrogen is produced in microorganism electrolytic cell using protein by starting reactor, setting a resistor in closed loop and using electrolytic cell as power supply; uniformly mixing domestic sewage with nutrient fluid A; introducing obtained mixed solution C into the electrolytic cell; dissolving protein in nutrition fluid B to obtain mixed solution D; changing mixed solution C in electrolytic cell with mixed solution D; and producing hydrogen gas by taking protein as substrate and using direct current power supply.    USE - Method for producing hydrogen in microorganism electrolytic cell using protein (claimed).    ADVANTAGE - The method can directly produce hydrogen gas from protein by using microorganism electrolysis technique; and has high protein utilization ratio and high clearance for chemical oxygen demand. Further, the method is suitable for treating organic wastewater and organic solid waste containing protein while recycling energy. Hence, it does not cause pollution and saves energy.    DETAILED DESCRIPTION - Production of hydrogen in microorganism electrolytic cell using protein comprises starting reactor under electricity production mode by setting a resistor in closed loop and using electrolytic cell as power supply; uniformly mixing domestic sewage with nutrient fluid A at volume ratio of 1:1 to obtain mixed solution C; introducing the mixed solution C into the electrolytic cell; changing new mixed solution C under condition that the voltage at two ends of closed loop resistor is less than 25 mV; continuously changing mixed solution C until the voltage at two ends of resistor is greater than 500 mV; dissolving protein in nutrition fluid B to obtain mixed solution D; changing the mixed solution C in electrolytic cell with mixed solution D; changing new mixed solution D under the condition that the voltage of two ends of resistor is less than 50 mV in electricity production mode; continuously changing mixed solution D until the voltage of resistor stays maximum value; producing hydrogen gas by taking protein as substrate and using direct current power supply to add 0.4-0.8 V of voltage to two ends of electrolytic cell; dissolving protein in nutrition fluid B to obtain mixed solution E; changing mixed solution D in electrolytic cell with mixed solution E; reacting for 20-24 hours at circuit temperature of 25-30 degrees C and pH value of mixed solution E of 6.8-7.1 to obtain hydrogen gas. The cathode back side of electrolytic cell in electricity production mode is exposed to air. Each liter of nutrition fluid A comprises (g) disodium hydrogen phosphate dodecahydrate (Na2HPO4.12H2O, 11.55), sodium dihydrogen phosphate dihydrate (NaH2PO4.2H2O, 2.77), ammonium chloride (NH4Cl, 0.31), potassium chloride (KCl, 0.13), sodium acetate (1), trace element solution (2 mL) and distilled water (balance). Each liter of nutrition solution B comprises Na2HPO4.12H2O (11.55), NaH2PO4.2H2O (2.77), NH4Cl (0.31), KCl (0.13), trace element solution (2 mL) and distilled water (balance). Protein in the nutrition solution B for obtaining mixed solution D is present at 400-500 mg/L. Protein in nutrition solution B for obtaining mixed solution E is present at 400-1000 mg/L. The anode of electrolytic cell is carbon fiber. The cathode is non-submerged carbon cloth. The resistance value of resistor is 1 kilohm. The cathode of electrolytic cell in electricity production mode is in anaerobic condition.