Abstract: The effect of condensation heat transfer ability of containment is one of the significant factors on passive safety system by removing residual heat from core. The experimental study of separate effect on the containment condensation heat transfer was conducted, based on the passive containment coolant system of ACP100 K modularize reactor. Coolant energy balance method is applied to obtain the heat flux. The effects of steam temperature, temperature difference between steam and surface, steam mass flow rate, condensation plate orientation and non-condensable gas on condensation heat transfer coefficient were mainly studied. The correlation between steam temperature and condensation heat transfer is obtained by fitting based on the experimental data.