Abstract: Within the range of Reynolds number from 467 to 3350, and heat flux from 50 to 150 k W/m², the experimental investigation was carried out on the flow and heat transfer characteristics of subcooling water（single phase） for equivalent model of sphere bed. The effects of thermal parameters on the flow and heat transfer characteristics of equivalent model were analyzed, and the experimental correlations of the flow resistance coefficient and heat transfer coefficient were obtained. The experimental results show that the pressure drop is increased quadratically with the increasing of superficial velocity, and the pressure drop increases with the decreasing of inlet temperature. The convection heat transfer coefficient increases with the increasing of heat flux and superficial velocity.