In this paper, the heat and mass transfer characteristics of the steam methane reforming (SMR) hydrogen production performances using HTR-10 are analyzed. The hydrogen production performances includes the methane conversion rate (XCH4), carbon monoxide conversion rate (XCO), thermal efficiency (η) are evaluated. In addition, the reformer inlet parameters includes the helium inlet temperature (T3inlet), flow rate (F3inlet), process gas inlet temperature (T2inlet), pressure (P2inlet), process gas inlet flow rate (F2inlet) and steam to carbon ratio (S) are considered. Based on the reformer performance parameters (including XCH4 or η or XCO), reformer inlet parameters (like F2inlet, F3inlet, T2inlet, T3inlet, S, P2inlet) and reformer length, the value of the third type of parameter are obtained using the retrieving program. Relative error of XCH4 between the calculation results and the reported values is less than 5.40%. System characteristics of the coupled system are obtained and can be helpful for the related applications.