Mixtures of iron-loaded biochar (Fe-SG) and Indonesian Adaro sub-bituminous coal (AD) were gasified at 700-800℃ for 60 min, in a 50 % H_2O/He atmosphere. For all gasification temperatures, the amount of hydrogen evolution increased with increasing the adding amount of iron-loaded biochar. At 800℃, it was found that the increment of hydrogen evolution for the mixture of Fe-SG and AD was larger than that for the mixture of Fe-demineralized SG and AD. Also, it was observed that the high specific rate was maintained even at the latter period of gasification for the addition of larger amount of iron-loaded char. The relationship between the gasification behavior and the chemical form of iron catalyst was discussed.