HYDROGEN PRODUCTION METHOD AND HYDROGEN PRODUCTION DEVICE

A hydrogen production method that reduces carbon dioxide emissions outside the system is provided.A hydrogen production method including: performing a dry reforming reaction to obtain a synthesis gas containing carbon monoxide and hydrogen from a source gas containing methane and carbon dioxide in the presence of a dry reforming catalyst; performing a solid carbon capture reaction by reacting the synthesis gas in the presence of a catalyst for capturing solid carbon to generate solid carbon from the carbon monoxide in the synthesis gas, thereby obtaining the solid carbon and a processed gas; and separating the processed gas into an emission gas and hydrogen to obtain hydrogen, wherein a content molar ratio CO/CO2 of a content of the carbon monoxide to a content of the carbon dioxide in the synthesis gas, reaction temperature T1 (°C) of the dry reforming reaction, and reaction temperature T2 (°C) of the solid carbon capture reaction satisfy the following condition (1):[Formula 1] 450