NOVELTY - Producing hydrogen and methane by continuous solid-state fermentation of food waste, comprises e.g.: separating liquid and solid food waste using centrifugal dewatering machine; performing steam explosion treatment to the dehydrated food waste; mixing the food waste with municipal wastewater treatment plant sludge into a continuous solid-state fermentation reactor for anaerobic fermentation, feeding the steam explosion food waste separately; performing desulfurization and carbon dioxide separation, preparing hydrogen and methane gas; and drying fermented slag as an organic fertilizer.    USE - The method is useful producing hydrogen and methane by continuous solid-state fermentation of food waste.    ADVANTAGE - The method: processes food waste through the steam explosion such that the degradation rate can be increased; produces hydrogen and methane through solid fermentation, thus preventing subsequent wastewater treatment; and increases the efficiency through the application of the continuous fermentation.    DETAILED DESCRIPTION - Producing hydrogen and methane by continuous solid-state fermentation of food waste, comprises: (a) using a centrifugal dewatering machine for separating liquid and solid food waste so that the water content of food waste is reduced to 40-50% (w/w); (b) performing steam explosion treatment to the dehydrated food waste; (c) mixing the food waste with the municipal wastewater treatment plant sludge into a continuous solid-state fermentation reactor for anaerobic fermentation; (d) after performing fermentation for 5-10 days, stopping to add the sludge, feeding the steam explosion food waste separately, and starting up a peristaltic pump and placing fermented slag on the bottom of the reactor into the top of the reactor to inoculate the entered steam explosion food waste; (e) in the fermentation process, using the circulating air blower to stir the material and stimulate the growth of microorganisms; (f) controlling the temperature of the material in the reactor using reactor jacket temperature, regarding the gas produced in the reactor as the circulating gas, when gas pressure is higher than 0.1 MPa, introducing the gas into the gas purifier to be purified through the three-way valve of the circulating system, performing desulfurization and carbon dioxide separation, preparing hydrogen and methane gas; and (g) drying the fermented slag as an organic fertilizer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device for producing hydrogen and methane by continuous solid-state fermentation of food waste.